CN113590482B - Test method and test system for battery management system BMS - Google Patents
Test method and test system for battery management system BMS Download PDFInfo
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Abstract
The invention provides a test method and a test system for a Battery Management System (BMS), wherein the method comprises the following steps: acquiring a target test item of a Battery Management System (BMS), and determining a test sequence number corresponding to the target test item; determining a test standard and a test level corresponding to the test serial number in a preset test table; and testing target test items of the battery management system BMS based on the test standards and the test levels. The test sequence number is determined through the target test item of the battery management system BMS, so that the test standard and the test level corresponding to the battery management system BMS can be determined, the test on the target test item can be completed, and the comprehensiveness and accuracy of the test on the battery management system BMS are greatly improved.
Description
Technical Field
The invention relates to the technical field of detection, in particular to a testing method and a testing system for a Battery Management System (BMS).
Background
At present, with the advocation of energy conservation and emission reduction of various countries, new energy batteries become the development direction of the world at present. The battery management system BMS has functions of voltage measurement, communication, SoC estimation, SoH estimation, abnormality warning, abnormality protection, equalization, other management and control circuits, temperature measurement, current measurement, diagnosis, and the like. Therefore, before the battery management system BMS is formally used, the battery management system BMS needs to be tested firstly, and can be formally started only under the condition that the function of the battery management system BMS is determined to be stable, but when the existing battery management system BMS is tested, an engineer writes a script according to the requirement to generate a test case, the result is obtained and analyzed according to the step operation, and a test report is output;
therefore, the invention provides a testing method and a testing system for a Battery Management System (BMS), which are used for determining the testing sequence number through the target testing item of the BMS, thereby being beneficial to determining the testing standard and the testing level corresponding to the BMS, further completing the testing of the target testing item, and greatly improving the comprehensiveness and the accuracy of the testing of the BMS.
Disclosure of Invention
The invention provides a testing method and a testing system for a Battery Management System (BMS), which are used for determining a testing sequence number through a target testing item of the BMS, so that the testing standard and the testing level corresponding to the BMS can be determined, the testing of the target testing item can be further completed, and the comprehensiveness and the accuracy of the testing of the BMS can be greatly improved.
The invention provides a test method for a Battery Management System (BMS), which comprises the following steps:
step 1: acquiring a target test item of a Battery Management System (BMS), and determining a test sequence number corresponding to the target test item;
and 2, step: determining a test standard and a test level corresponding to the test serial number in a preset test table;
and step 3: and testing target test items of the battery management system BMS based on the test standards and the test levels.
Preferably, the test method for the battery management system BMS includes: the temperature was 25 ℃ and the pressure 1.01325 Pa.
Preferably, in step 2, the test level includes:
first-level testing;
wherein the primary test comprises: the method comprises the steps that the battery management system BMS finishes shipment, the battery management system BMS finishes 3/4 tests of all items, and meanwhile, the method further comprises the steps of performing a sample outlet function test on the battery management system BMS and performing an acceptance test on the battery management system BMS by a client;
performing secondary test;
wherein the secondary testing comprises: executing the content of the primary test, determining the test data of the target test item according to the content of the primary test, and sending the test data to a client, wherein the test data is consistent with the preset requirement data of the client;
carrying out three-stage testing;
wherein the tertiary testing comprises: executing the content of the primary test and the content of the secondary test, simultaneously, completely testing all test items of the battery management system BMS by a client, and completely testing protection board test items by a designer, wherein all items of the battery management system BMS comprise the protection board test items;
when a first new scheme appears in the testing process, testing a target test item according to the first new scheme, wherein the target test item corresponds to the first new scheme;
testing at four levels;
wherein the four-level test comprises: optimizing the performance of the battery management system BMS, and performing an improvement test based on an optimization result;
and after the improved test is completed, making a second new scheme, testing all test items of the battery management system BMS according to the second new scheme, and simultaneously, carrying out limit test on all test items of the battery management system BMS.
Preferably, in step 3, after the target test items of the battery management system BMS are tested based on the test standards and the test levels, the method further includes:
s101: acquiring test data and extracting a data identifier of the test data;
s102: setting a data recording area according to the data identification, and simultaneously setting a data recording priority according to the time sequence for testing the target test item;
s103: recording the test data in the data recording area based on the data recording priority;
s104: in the data recording area, carrying out data inspection on the test data according to a preset data inspection method, and obtaining an inspection result;
s105: determining whether invalid data exists in the test data based on the inspection result;
when invalid data exists in the inspection result, removing the invalid data;
s106: otherwise, analyzing the data value of the test data, and determining the performance of the target test item based on the analysis result;
meanwhile, the overall performance of the battery management system BMS is estimated according to the performance of the target test item.
Preferably, a test method for a battery management system BMS, which performs an analysis process on a data value of the test data, includes:
acquiring a test identifier of the test data, and determining a test standard for testing the target test item based on the test identifier;
determining a standard data value range of the data value of the test data based on the test standard, and meanwhile, judging whether the data value of the test data is in the standard data value range;
when the data value of the test data is not in the standard data value range, judging that the performance of the target test item is abnormal;
otherwise, judging that the performance of the target test item is normal.
Preferably, the method for testing the battery management system BMS, determining that the target test item is normal in performance, includes:
acquiring attribute information of a target test item, and acquiring performance index parameter values required by a control terminal for the target test item, wherein the attribute information comprises current performance index parameter values of the target test item and test category information of the target test item;
determining the correlation between the performance index parameter value and the attribute information of the target test item, and determining an adjustment value of the current performance index parameter value of the target test item based on the correlation, wherein the adjustment value is used for guiding the control terminal to perform performance optimization on the target test item;
and the control terminal matches a target performance optimization strategy from a preset performance optimization strategy library based on the attribute information of the target test item, and completes performance optimization of the target test item according to the adjustment value based on the target performance optimization strategy.
Preferably, after the test data is obtained, the method for testing the battery management system BMS further includes:
comparing the test data with preset test data;
if the test data is the same as the preset test data, judging that the test scheme corresponding to the target test item is correct, and shooting and uploading the test value;
otherwise, determining difference data of the test data and the preset test data, and searching a target reason causing the test data to be different from the preset test data based on the difference data;
if the target reason is a target test item self factor, sending a reminding signal to a management terminal based on a preset communication mode, and marking the target test item by the management terminal based on the reminding signal;
if the target reason is a test scheme factor, re-acquiring the test elements of the target test item based on a preset method, and sequencing the test elements based on a preset test arrangement sequence;
and adjusting the test scheme based on the sequencing result, and retesting the test elements of the target test item based on the adjusted test scheme until the test data is the same as the preset test data, thereby completing the calibration of the test data.
Preferably, in step 3, after the target test items of the battery management system BMS are tested, the method further includes:
acquiring item identifiers of the target test items, and generating a table according to the report corresponding to the item identifiers in a matching manner;
meanwhile, determining header information of the report generation form based on the item identifier, and filling target test data after the target test item is tested according to the header information;
establishing a data typesetting model based on a preset report page style;
meanwhile, inputting the filled target test data into the data typesetting model for typesetting and displaying to obtain a typesetting result document of the preset report style;
based on a preset format conversion control, carrying out format conversion on the typesetting result document of the preset report page style to obtain a data report of a target format;
analyzing the data report, acquiring an input data point of the analyzed report, and acquiring a first data sequence in the data report according to the input data point;
wherein the first data sequence comprises a plurality of target test data;
obtaining the test type of the target test item, and determining the display requirement of the target test data according to the test type;
acquiring display characteristics of the display requirements, retrieving expected data in the first data sequence according to the display characteristics, sequencing the expected data according to the sequence of the first data sequence, and generating a second data sequence based on a sequencing result;
visualizing the second data sequence in a two-dimensional space according to the display requirement, displaying target test data in the second data sequence according to the two-dimensional space, and acquiring a display result;
generating a photographing identification code according to the display result, matching the photographing identification code in a preset instruction library according to the photographing identification code, and determining a photographing instruction corresponding to the photographing identification code;
and photographing the display result based on the photographing instruction to obtain a data photo after the target test item is tested.
Preferably, the method for testing the battery management system BMS further includes, after the data photograph is acquired:
analyzing the data photo to obtain the length pixel number, the width pixel number and the diagonal length of the data photo;
calculating the resolution of the data picture based on the number of length pixels and the number of width pixels of the data picture and the diagonal length of the data picture;
comparing the resolution of the data picture with a specified resolution, and judging whether the data picture reaches a preset definition standard;
when the resolution of the data picture is equal to the specified resolution, judging that the data picture reaches a preset definition standard;
otherwise, determining a resolution difference value according to the resolution of the data picture and the specified resolution;
adjusting the number of length pixels and the number of width pixels of the data picture and the diagonal length of the data picture according to the resolution difference until the resolution of the data picture is consistent with the specified resolution;
and acquiring a high-resolution data picture based on the adjustment result, and uploading and displaying the high-resolution data picture based on a preset channel.
Preferably, a test system for a battery management system BMS includes:
the system comprises a test sequence number acquisition module, a test sequence number acquisition module and a test sequence number determination module, wherein the test sequence number acquisition module is used for acquiring a target test item of a battery management system BMS and determining a test sequence number corresponding to the target test item;
the test standard acquisition module is used for determining a test standard and a test level corresponding to the test serial number in a preset test table;
a test module for testing a target test item of the battery management system BMS based on the test standard and the test level
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.
The technical solution of the present invention is further described in detail by the accompanying drawings and embodiments.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:
fig. 1 is a flowchart of a testing method for a battery management system BMS according to an embodiment of the present invention;
fig. 2 is a diagram illustrating a test system for a battery management system BMS according to an embodiment of the present invention;
FIG. 3 is a flowchart illustrating performance estimation for a target test item according to an embodiment of the present invention.
Detailed Description
The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are described herein for the purpose of illustration and explanation and not limitation.
Example 1:
the embodiment provides a testing method for a battery management system BMS, as shown in fig. 1, including:
step 1: acquiring a target test item of a Battery Management System (BMS), and determining a test sequence number corresponding to the target test item;
and 2, step: determining a test standard and a test level corresponding to the test serial number in a preset test table;
and step 3: and testing target test items of the battery management system BMS based on the test standards and the test levels.
In this embodiment, the target test item refers to one of static power consumption, overcharge protection voltage, overcharge protection delay, and the like.
In this embodiment, the test sequence number refers to a number corresponding to each test item, and the content of the corresponding test item can be quickly determined according to the number.
In this embodiment, the preset test table is set in advance and is used for recording the test standard and the test level corresponding to the test item.
In this embodiment, the conditions for detecting the battery management system include: the temperature was 25 ℃ and the pressure 1.01325 Pa.
The beneficial effects of the above technical scheme are: the test sequence number is determined through the target test item of the battery management system BMS, so that the test standard and the test level corresponding to the battery management system BMS can be determined, the test on the target test item can be completed, and the comprehensiveness and accuracy of the test on the battery management system BMS are greatly improved.
Example 2:
on the basis of the above embodiment 1, in step 2, the test grade includes:
first-level testing;
wherein the primary test comprises: the method comprises the steps that the battery management system BMS finishes shipment, the battery management system BMS finishes 3/4 tests of all items, and meanwhile, the method further comprises the steps of performing a sample outlet function test on the battery management system BMS and performing an acceptance test on the battery management system BMS by a client;
performing secondary test;
wherein the secondary testing comprises: executing the content of the primary test, determining the test data of the target test item according to the content of the primary test, and sending the test data to a client, wherein the test data is consistent with the preset requirement data of the client;
carrying out three-stage testing;
wherein the tertiary testing comprises: executing the content of the primary test and the content of the secondary test, simultaneously, completely testing all test items of the battery management system BMS by a client, and completely testing all protection board test items by a designer, wherein all items of the battery management system BMS comprise the protection board test items;
when a first new scheme appears in the testing process, testing a target test item according to the first new scheme, wherein the target test item corresponds to the first new scheme;
testing at four levels;
wherein the four-level test comprises: optimizing the performance of the battery management system BMS, and performing an improvement test based on an optimization result;
and after the improved test is completed, making a second new scheme, testing all test items of the battery management system BMS according to the second new scheme, and simultaneously, carrying out limit test on all test items of the battery management system BMS.
In this embodiment, the acceptance test refers to detecting each function of the system when the client accepts the system.
In this embodiment, the improved test refers to a test of the system after the performance of the system is optimized.
In this embodiment, the limit test refers to the detection of the maximum performance capability or detection performance of the system.
The beneficial effects of the above technical scheme are: through confirming different test grades, be favorable to carrying out the accurate functional test that corresponds to each test item, very big improvement carry out comprehensive and the precision of testing to battery management system BMS.
Example 3:
on the basis of embodiment 1, this embodiment provides a testing method for a battery management system BMS, as shown in fig. 3, in step 3, after testing a target test item of the battery management system BMS based on the test standard and the test level, the method further includes performing performance estimation on the target test item, and the specific working steps include:
s101: acquiring test data and extracting a data identifier of the test data;
s102: setting a data recording area according to the data identification, and simultaneously setting a data recording priority according to the time sequence for testing the target test item;
s103: recording the test data in the data recording area based on the data recording priority;
s104: in the data recording area, carrying out data inspection on the test data according to a preset data inspection method, and obtaining an inspection result;
s105: determining whether invalid data exists in the test data based on the inspection result;
when invalid data exist in the inspection result, removing the invalid data;
s106: otherwise, analyzing the data value of the test data, and determining the performance of the target test item based on the analysis result;
meanwhile, the overall performance of the battery management system BMS is estimated according to the performance of the target test item.
In this embodiment, the data identifier is a kind of label used to mark the data type or data position, so as to accurately determine the corresponding data recording area according to the data identifier.
In this embodiment, the preset data check method is set in advance and is used to detect the validity of data.
In this embodiment, the invalid data may be data that is useless for analyzing the target test item after the target test item is tested, for example, duplicate data or error data.
The beneficial effects of the above technical scheme are: whether invalid data exist in the test data is recorded and analyzed, so that the performance of a target test item can be accurately analyzed, and meanwhile, the comprehensiveness and accuracy of testing the battery management system BMS are greatly improved.
Example 4:
on the basis of embodiment 3 above, this embodiment provides a testing method for a battery management system BMS, which performs an analysis process on data values of the test data, including:
acquiring a test identifier of the test data, and determining a test standard for testing the target test item based on the test identifier;
determining a standard data value range of the data value of the test data based on the test standard, and meanwhile, judging whether the data value of the test data is in the standard data value range;
when the data value of the test data is not in the standard data value range, judging that the performance of the target test item is abnormal;
otherwise, judging that the performance of the target test item is normal.
In this embodiment, the test identifier is used to mark the type of the test data, so as to determine the test standard corresponding to the target test item accurately and quickly according to the test identifier.
In this embodiment, the standard data value range is a value range corresponding to a value when the performance of the target test item is normal.
The beneficial effects of the above technical scheme are: through analyzing the test data value of the target test item, whether the performance of the current target test item is normal or not can be accurately judged according to the test data value, and the comprehensiveness of testing the battery management system BMS can be accurately grasped.
Example 5:
on the basis of the above embodiment 4, this embodiment provides a testing method for a battery management system BMS, which determines that the performance of the target test item is normal, including:
acquiring attribute information of a target test item, and acquiring a performance index parameter value required by a control terminal for the target test item, wherein the attribute information comprises a current performance index parameter value of the target test item and test category information of the target test item;
determining the correlation between the performance index parameter value and the attribute information of the target test item, and determining an adjustment value of the current performance index parameter value of the target test item based on the correlation, wherein the adjustment value is used for guiding the control terminal to perform performance optimization on the target test item;
and the control terminal matches a target performance optimization strategy from a preset performance optimization strategy library based on the attribute information of the target test item, and completes performance optimization of the target test item according to the adjustment value based on the target performance optimization strategy.
In this embodiment, the attribute information of the target test item refers to the current performance parameter of the target test item, the category to which the target test item belongs, and the like.
In this embodiment, the performance index parameter value required by the target test item refers to the performance index that the control terminal requires the target test item to achieve, and is known in advance.
In this embodiment, the correlation refers to a corresponding relationship between a performance index parameter required by the control terminal and the target test item, that is, an index for measuring whether the target test item can reach the required performance parameter.
In this embodiment, the adjustment value refers to the difference between the current performance parameter value and the required performance parameter value of the target test item.
In this embodiment, the preset performance optimization policy library is set in advance, and a plurality of performance optimization policies are stored in the preset performance optimization policy library.
The beneficial effects of the above technical scheme are: by acquiring the current performance parameters and the required performance parameter values of the target test item and determining the difference value between the current performance parameters and the required performance parameter values, the performance parameters of the target test item are optimized under the condition that the performance parameters of the target test item are unstable, and the comprehensiveness and accuracy of testing the battery management system BMS are ensured to be improved.
Example 6:
on the basis of embodiment 3 above, this embodiment provides a testing method for a battery management system BMS, and after acquiring the test data, the method further includes:
comparing the test data with preset test data;
if the test data is the same as the preset test data, judging that the test scheme corresponding to the target test item is correct, and shooting and uploading the test value;
otherwise, determining difference data of the test data and the preset test data, and searching a target reason causing the test data to be different from the preset test data based on the difference data;
if the target reason is a target test item self factor, sending a reminding signal to a management terminal based on a preset communication mode, and marking the target test item by the management terminal based on the reminding signal;
if the target reason is a test scheme factor, re-acquiring test elements of a target test item based on a preset method, and sequencing the test elements based on a preset test arrangement sequence;
and adjusting the test scheme based on the sequencing result, and retesting the test elements of the target test item based on the adjusted test scheme until the test data is the same as the preset test data, thereby completing the calibration of the test data.
In this embodiment, the preset test data is set in advance, and is used to measure whether the test data is accurate.
In this embodiment, the difference data refers to data corresponding to a difference between the test data and the preset test data.
In this embodiment, the target reason refers to a reason why the test data is different from the preset test data.
In this embodiment, the marking process refers to labeling the current target test item, so that the management terminal can determine which test item has a defect at any time.
In this embodiment, the test element refers to corresponding test content in the target test item, for example, when the target test item is a test voltage, the test element may be a resistance value, a capacitance value, or the like.
In this embodiment, the preset test arrangement sequence is set in advance, and is used to sort the test contents, so as to facilitate accurate and ordered detection of the test contents in the target test item.
The beneficial effects of the above technical scheme are: through comparing test data with preset test data, whether the test data of current test item is accurate is convenient for in time look over to whether it is reasonable to be convenient for judge current test scheme according to test data, and confirm when unreasonable and cause unreasonable reason, realize in time getting rid of the trouble reason, be convenient for accurate assurance carry out the comprehensiveness and the accurate nature tested to battery management system BMS.
Example 7:
on the basis of embodiment 1, this embodiment provides a testing method for a battery management system BMS, and in step 3, after testing a target test item of the battery management system BMS, the method further includes:
acquiring item identifiers of the target test items, and generating a table according to the report corresponding to the item identifiers in a matching manner;
meanwhile, determining header information of the report generation form based on the item identifier, and filling target test data after the target test item is tested according to the header information;
creating a data typesetting model based on a preset report page style;
meanwhile, inputting the filled target test data into the data typesetting model for typesetting and displaying to obtain a typesetting result document of the preset report style;
based on a preset format conversion control, carrying out format conversion on the typesetting result document of the preset report page style to obtain a data report of a target format;
analyzing the data report, acquiring an input data point of the analyzed report, and acquiring a first data sequence in the data report according to the input data point;
wherein the first data sequence comprises a plurality of target test data;
obtaining the test type of the target test item, and determining the display requirement of the target test data according to the test type;
acquiring display characteristics of the display requirements, retrieving expected data in the first data sequence according to the display characteristics, sequencing the expected data according to the sequence of the first data sequence, and generating a second data sequence based on a sequencing result;
visualizing the second data sequence in a two-dimensional space according to the display requirement, displaying target test data in the second data sequence according to the two-dimensional space, and acquiring a display result;
generating a photographing identification code according to the display result, matching the photographing identification code in a preset instruction library according to the photographing identification code, and determining a photographing instruction corresponding to the photographing identification code;
and photographing the display result based on the photographing instruction to obtain a data photo after the target test item is tested.
In this embodiment, the item identifier is used to distinguish each test item, and for example, the item identifiers may be 1, 2, and 3, and the target detection item may be accurately locked according to the item identifier.
In this embodiment, the header information is used to show the specific type of each table.
In this embodiment, the preset report page style is set in advance and is a style requirement for the report.
In this embodiment, the layout result document refers to a file obtained by laying out test data.
In this embodiment, the preset format conversion control is set in advance and is used for converting the document format.
In this embodiment, the data report in the target format refers to a final data report format obtained by converting the report format.
In this embodiment, the input data point refers to the beginning of the recorded data in the report.
In this embodiment, the display requirements of the target test data refer to the type of chart that the test data needs to be presented.
In this embodiment, the display characteristics refer to characteristic information of a chart type, for example, the display characteristics of a pie chart are a pie and the like.
In this embodiment, the expected data refers to the point of each data point in the chart within the trend range of the data, for example, the point of the curve chart with larger deviation from the curve line is not the expected data.
In this embodiment, the preset instruction library is set in advance, and a plurality of photographing instructions are stored in the preset instruction library.
The beneficial effects of the above technical scheme are: through with test data generation report to typesetting the report, be convenient for realize carrying out accurate record to test data, with the visual show of the test data model in the report simultaneously, be convenient for audio-visually see the test result of target test item, take a picture with the visual result of data simultaneously, realized the save to test data, the very big improvement of this scheme is carried out comprehensive and the precision of testing to battery management system BMS.
Example 8:
on the basis of embodiment 7, this embodiment provides a testing method for a battery management system BMS, and after acquiring the data photo, the testing method further includes:
analyzing the data photo to obtain the length pixel number, the width pixel number and the diagonal length of the data photo;
calculating the resolution of the data picture based on the number of length pixels and the number of width pixels of the data picture and the diagonal length of the data picture;
comparing the resolution of the data picture with a specified resolution, and judging whether the data picture reaches a preset definition standard;
when the resolution of the data picture is equal to the specified resolution, judging that the data picture reaches a preset definition standard;
otherwise, determining a resolution difference value according to the resolution of the data picture and the specified resolution;
adjusting the length pixel number, the width pixel number and the diagonal length of the data picture according to the resolution difference value until the resolution of the data picture is consistent with the specified resolution;
and acquiring a high-resolution data picture based on the adjustment result, and uploading and displaying the high-resolution data picture based on a preset channel.
In this embodiment, the predetermined resolution is set in advance, and is used to determine whether the sharpness of the photographed picture meets the desired requirement.
In the embodiment, the preset channel is built in advance and is used for uploading pictures with qualified definition.
The beneficial effects of the above technical scheme are: through the definition of judging the data photo, realize adjusting the photo definition under the condition that the definition is not conform to the requirement, and reach the definition and upload and show the image after the requirement, realize carrying out the comprehensiveness of testing and being convenient for directly perceivedly when seeing the test result to battery management system BMS.
Example 9:
on the basis of embodiment 1, this embodiment provides a testing method for a battery management system BMS, further including:
according to the test result, the standard temperature of the current battery is obtained, the temperature influence coefficient of the battery is calculated according to the standard temperature of the battery, meanwhile, the charging efficiency of the battery is calculated based on the temperature influence coefficient, and the specific working process comprises the following steps:
extracting the standard temperature of the battery in the test result, and calculating the temperature influence coefficient of the battery according to the standard temperature of the battery;
wherein δ represents a temperature influence coefficient of the battery; xi represents a temperature coefficient, and the general value range is (0.012, 0.016); q. q of 1 Represents a standard temperature of the battery; q. q.s 0 Representing a set temperature of the battery, wherein the standard temperature of the battery is greater than or equal to the set temperature of the battery;
calculating the charging efficiency of the battery based on the temperature influence coefficient of the battery;
wherein η represents a charging efficiency of the battery; μ represents an aging coefficient of the battery; g represents the current electric quantity value of the battery; g represents the total charge of the battery; a represents a constant relating to the battery active material; i is Charging device Represents a charging current of the battery; i is Put Represents a discharge current of the battery; t is t 0 Representing a time for the battery to discharge to a cutoff voltage; t is t 1 Represents a charging time for charging the battery; k represents a constant related to the battery type;
and completing the efficiency test of the battery system BMS based on the charging efficiency of the battery.
In this embodiment, the constant related to the battery active material may be, for example, a value determined by an active material in the battery, for example, when the active material in the alkaline manganese battery is zinc, a corresponding open-circuit voltage is correspondingly changed, and further, a battery operation value is transformed, so that the constant related to the electrically active material is taken into consideration, which is beneficial to improving the accuracy of data.
In this embodiment, for the formula:
for example, it may be: when the value of the temperature coefficient xi is 0.015 in 1/DEG C, the standard temperature q of the battery 1 At 26 deg.C, the set temperature q of the cell 0 At 18 c, the temperature coefficient of influence δ of the battery was calculated to be 1.08.
In this embodiment, for the formula:
for example, it may be: the aging coefficient mu of the battery is 0.1, the current electric quantity value G of the battery is 2 banks, the total electric quantity G of the battery is 4 banks, the temperature influence coefficient delta of the battery is 1.08, the constant A related to the active material of the battery is 1, and the charging current I of the battery is 1 Charging device Is 3A, the discharge current I of the battery Put Is 4A, the time t for the battery to discharge to the cut-off voltage 0 The value is 20 hours; charging time t for charging battery 1 Is 22 hours, the constant k associated with the battery type is 2.8, and the calculated charging efficiency η of the battery is approximately equal to 93%.
The beneficial effects of the above technical scheme are: the standard temperature of the current battery is favorably acquired through a test result, so that the temperature influence coefficient of the battery is accurately calculated according to the standard temperature of the battery, the charging efficiency of the battery is accurately calculated through the temperature influence coefficient, and the accuracy of efficiency test of a battery system BMS is favorably improved.
Example 10:
the present embodiment provides a test system for a battery management system BMS, as shown in fig. 2, including:
the battery management system BMS test system comprises a test sequence number acquisition module, a test sequence number acquisition module and a test sequence number determination module, wherein the test sequence number acquisition module is used for acquiring a target test item of a battery management system BMS and determining a test sequence number corresponding to the target test item;
the test standard acquisition module is used for determining a test standard and a test level corresponding to the test serial number in a preset test table;
and the testing module is used for testing the target testing items of the battery management system BMS based on the testing standards and the testing levels.
The beneficial effects of the above technical scheme are: the test sequence number is determined through the target test item of the battery management system BMS, so that the test standard and the test level corresponding to the battery management system BMS can be determined, the test on the target test item can be completed, and the comprehensiveness and accuracy of the test on the battery management system BMS are greatly improved.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (9)
1. A test method for a Battery Management System (BMS), comprising:
step 1: acquiring a target test item of a Battery Management System (BMS), and determining a test sequence number corresponding to the target test item;
step 2: determining a test standard and a test level corresponding to the test serial number in a preset test table;
and 3, step 3: testing a target test item of the battery management system BMS based on the test standard and the test level;
in step 2, the test level comprises:
first-level testing;
wherein the primary test comprises: the method comprises the steps that the battery management system BMS finishes shipment, the battery management system BMS finishes 3/4 tests of all items, and meanwhile, the method further comprises the steps of performing a sample outlet function test on the battery management system BMS and performing an acceptance test on the battery management system BMS by a client;
performing secondary test;
wherein the secondary testing comprises: executing the content of the primary test, determining the test data of the target test item according to the content of the primary test, and sending the test data to a client, wherein the test data is consistent with the preset requirement data of the client;
carrying out three-stage testing;
wherein the tertiary testing comprises: executing the content of the primary test and the content of the secondary test, simultaneously, completely testing all test items of the battery management system BMS by a client, and completely testing protection board test items by a designer, wherein all items of the battery management system BMS comprise the protection board test items;
when a first new scheme appears in the testing process, testing a target test item according to the first new scheme, wherein the target test item corresponds to the first new scheme;
testing at four levels;
wherein the four-level test comprises: optimizing the performance of the battery management system BMS, and performing an improvement test based on an optimization result;
and after the improved test is completed, making a second new scheme, testing all test items of the battery management system BMS according to the second new scheme, and simultaneously, carrying out limit test on all test items of the battery management system BMS.
2. The test method for the battery management system BMS according to claim 1, wherein the condition for detecting the battery management system comprises: the temperature was 25 ℃ and the pressure 1.01325 Pa.
3. The method as claimed in claim 1, wherein in step 3, after testing the target test items of the battery management system BMS based on the test criteria and the test levels, the method further comprises:
s101: acquiring test data and extracting a data identifier of the test data;
s102: setting a data recording area according to the data identification, and simultaneously setting a data recording priority according to the time sequence for testing the target test item;
s103: recording the test data in the data recording area based on the data recording priority;
s104: in the data recording area, carrying out data inspection on the test data according to a preset data inspection method, and obtaining an inspection result;
s105: determining whether invalid data exists in the test data based on the verification result;
when invalid data exists in the inspection result, removing the invalid data;
s106: otherwise, analyzing the data value of the test data, and determining the performance of the target test item based on the analysis result;
meanwhile, the overall performance of the battery management system BMS is estimated according to the performance of the target test item.
4. A testing method for a battery management system BMS according to claim 3, characterized in that the analysis of the data values of said test data comprises:
acquiring a test identifier of the test data, and determining a test standard for testing the target test item based on the test identifier;
determining a standard data value range of the data value of the test data based on the test standard, and meanwhile, judging whether the data value of the test data is in the standard data value range;
when the data value of the test data is not in the standard data value range, judging that the performance of the target test item is abnormal;
otherwise, judging that the performance of the target test item is normal.
5. The test method for the Battery Management System (BMS) according to claim 4, wherein the step of judging the performance of the target test item is normal comprises the steps of:
acquiring attribute information of a target test item, and acquiring a performance index parameter value required by a control terminal for the target test item, wherein the attribute information comprises a current performance index parameter value of the target test item and test category information of the target test item;
determining the correlation between the performance index parameter value and the attribute information of the target test item, and determining an adjustment value of the current performance index parameter value of the target test item based on the correlation, wherein the adjustment value is used for guiding the control terminal to perform performance optimization on the target test item;
and the control terminal matches a target performance optimization strategy from a preset performance optimization strategy library based on the attribute information of the target test item, and completes performance optimization of the target test item according to the adjustment value based on the target performance optimization strategy.
6. The testing method for the Battery Management System (BMS) according to claim 3, further comprising, after acquiring the test data:
comparing the test data with preset test data;
if the test data is the same as the preset test data, judging that the test scheme corresponding to the target test item is correct, and photographing and uploading the test value;
otherwise, determining difference data of the test data and the preset test data, and searching a target reason causing the test data to be different from the preset test data based on the difference data;
if the target reason is a target test item self factor, sending a reminding signal to a management terminal based on a preset communication mode, and marking the target test item by the management terminal based on the reminding signal;
if the target reason is a test scheme factor, re-acquiring the test elements of the target test item based on a preset method, and sequencing the test elements based on a preset test arrangement sequence;
and adjusting the test scheme based on the sequencing result, and retesting the test elements of the target test item based on the adjusted test scheme until the test data is the same as the preset test data, thereby completing the calibration of the test data.
7. The method as claimed in claim 1, wherein the step 3, after testing the target test items of the battery management system BMS, further comprises:
acquiring item identifiers of the target test items, and generating a table according to the report corresponding to the item identifiers in a matching manner;
meanwhile, determining header information of the report generation form based on the item identifier, and filling target test data after the target test item is tested according to the header information;
creating a data typesetting model based on a preset report page style;
meanwhile, inputting the filled target test data into the data typesetting model for typesetting and displaying to obtain a typesetting result document of the preset report page style;
based on a preset format conversion control, carrying out format conversion on the typesetting result document of the preset report page style to obtain a data report of a target format;
analyzing the data report, acquiring an input data point of the analyzed report, and acquiring a first data sequence in the data report according to the input data point;
wherein the first data sequence comprises a plurality of target test data;
obtaining the test type of the target test item, and determining the display requirement of the target test data according to the test type;
acquiring display characteristics of the display requirements, retrieving expected data in the first data sequence according to the display characteristics, sequencing the expected data according to the sequence of the first data sequence, and generating a second data sequence based on a sequencing result;
visualizing the second data sequence in a two-dimensional space according to the display requirement, displaying target test data in the second data sequence according to the two-dimensional space, and acquiring a display result;
generating a photographing identification code according to the display result, matching the photographing identification code in a preset instruction library according to the photographing identification code, and determining a photographing instruction corresponding to the photographing identification code;
and photographing the display result based on the photographing instruction to obtain a data photo after the target test item is tested.
8. The method as claimed in claim 7, further comprising, after acquiring the data photo:
analyzing the data photo to obtain the number of length pixels and the number of width pixels of the data photo and the length of a diagonal line of the data photo;
calculating the resolution of the data picture based on the number of length pixels and the number of width pixels of the data picture and the diagonal length of the data picture;
comparing the resolution of the data picture with a specified resolution, and judging whether the data picture reaches a preset definition standard;
when the resolution of the data picture is equal to the specified resolution, judging that the data picture reaches a preset definition standard;
otherwise, determining a resolution difference value according to the resolution of the data picture and the specified resolution;
adjusting the number of length pixels and the number of width pixels of the data picture and the diagonal length of the data picture according to the resolution difference until the resolution of the data picture is consistent with the specified resolution;
and acquiring a high-resolution data picture based on the adjustment result, and uploading and displaying the high-resolution data picture based on a preset channel.
9. A test system for a Battery Management System (BMS), comprising:
the system comprises a test sequence number acquisition module, a test sequence number acquisition module and a test sequence number determination module, wherein the test sequence number acquisition module is used for acquiring a target test item of a battery management system BMS and determining a test sequence number corresponding to the target test item;
the test standard acquisition module is used for determining a test standard and a test level corresponding to the test serial number in a preset test table;
the testing module is used for testing target testing items of the battery management system BMS based on the testing standards and the testing levels;
in the test standard obtaining module, the test level includes:
first-level testing;
wherein the primary test comprises: the method comprises the steps that the battery management system BMS finishes shipment, the battery management system BMS finishes 3/4 tests of all items, and meanwhile, the method further comprises the steps of performing a sample outlet function test on the battery management system BMS and performing an acceptance test on the battery management system BMS by a client;
performing secondary test;
wherein the secondary testing comprises: executing the content of the primary test, determining the test data of the target test item according to the content of the primary test, and sending the test data to a client, wherein the test data is consistent with the preset requirement data of the client;
carrying out three-stage testing;
wherein the tertiary testing comprises: executing the content of the primary test and the content of the secondary test, simultaneously, completely testing all test items of the battery management system BMS by a client, and completely testing protection board test items by a designer, wherein all items of the battery management system BMS comprise the protection board test items;
when a first new scheme appears in the testing process, testing a target test item according to the first new scheme, wherein the target test item corresponds to the first new scheme;
testing at four levels;
wherein the four-level test comprises: optimizing the performance of the battery management system BMS, and performing an improvement test based on an optimization result;
and after the improved test is completed, making a second new scheme, testing all test items of the battery management system BMS according to the second new scheme, and simultaneously, carrying out limit test on all test items of the battery management system BMS.
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