CN114720896A - Battery testing process step identification method and system - Google Patents
Battery testing process step identification method and system Download PDFInfo
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- CN114720896A CN114720896A CN202210188630.0A CN202210188630A CN114720896A CN 114720896 A CN114720896 A CN 114720896A CN 202210188630 A CN202210188630 A CN 202210188630A CN 114720896 A CN114720896 A CN 114720896A
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- 238000012360 testing method Methods 0.000 title claims abstract description 349
- 238000000034 method Methods 0.000 title claims abstract description 53
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims abstract description 28
- 229910052744 lithium Inorganic materials 0.000 claims abstract description 28
- 230000008569 process Effects 0.000 claims abstract description 11
- 238000010998 test method Methods 0.000 claims description 5
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
- G01R31/389—Measuring internal impedance, internal conductance or related variables
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
- G01R31/367—Software therefor, e.g. for battery testing using modelling or look-up tables
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
- G01R31/396—Acquisition or processing of data for testing or for monitoring individual cells or groups of cells within a battery
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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Abstract
The invention provides a battery test process step identification method and a system in the technical field of battery test, wherein the method comprises the following steps: s10, establishing a testing step and a step switching condition on the upper computer and sending the testing step and the step switching condition to the middle computer; s20, controlling the lower computer to test the lithium battery based on the received test steps and the step switching conditions by the middle computer; step S30, the lower computer caches the test data based on a preset message format in the test process to obtain message data; and step S40, the middle computer periodically acquires the message data from the lower computer, analyzes the message data based on the message format to obtain test data, classifies the test data according to the test steps, and sends the test data to the upper computer for analysis. The invention has the advantages that: the test step corresponding to the test data is identified, and the accuracy of the battery test is greatly guaranteed.
Description
Technical Field
The invention relates to the technical field of battery testing, in particular to a battery testing process step identification method and a battery testing process step identification system.
Background
With the rise and development of new energy, the lithium battery as a green high-energy chemical power supply has the advantages of high energy, high power, low cost and the like, and is widely applied to the new energy industry. In order to ensure the safety of the lithium battery, a series of tests are required to be carried out on the lithium battery before the lithium battery is delivered from a factory.
In a three-layer lithium battery testing system (an upper computer, a middle computer and a lower computer), the lower computer is a mechanism which directly faces a lithium battery to execute actions, the middle computer is a mechanism which judges the execution actions of the lower computer by integrating different equipment information, and the lower computer timely and accurately sends test data including voltage, current, temperature and other information to the middle computer.
The middle computer controls the lower computer to test the lithium battery based on the test steps sent by the upper computer and collects test data, the test data are not collected and transmitted in real time but are collected and cached by the lower computer and then sent to the middle computer at regular time, namely the test data received by the middle computer can be the test data of two test steps, and the test steps corresponding to the test data need to be distinguished for further analysis of the test data.
Therefore, how to provide a method and a system for identifying battery testing steps to realize the identification of the testing steps corresponding to the testing data so as to ensure the accuracy of the battery testing becomes a technical problem to be solved urgently.
Disclosure of Invention
The technical problem to be solved by the invention is to provide a battery test procedure identification method and a battery test procedure identification system, so that the test procedure corresponding to the test data is identified, and the accuracy of the battery test is guaranteed.
In a first aspect, the invention provides a battery testing process step identification method, which comprises the following steps:
s10, establishing a testing step and a step switching condition on the upper computer and sending the testing step and the step switching condition to the middle computer;
s20, controlling the lower computer to test the lithium battery based on the received test steps and the step switching conditions by the middle computer;
step S30, the lower computer caches the test data based on a preset message format in the test process to obtain message data;
and step S40, the middle computer periodically acquires the message data from the lower computer, analyzes the message data based on the message format to obtain test data, classifies the test data according to the test steps, and sends the test data to the upper computer for analysis.
Further, the step S10 is specifically: establishing a plurality of testing working steps and working step switching conditions corresponding to the testing working steps on an upper computer, and sending each testing working step and each working step switching condition to a middle computer through an Ethernet;
each testing step carries a testing sequence; the step switching condition is timing switching or switching when the test data meets the threshold condition.
Further, the step S20 specifically includes:
step S21, the middle computer receives the testing steps and the step switching conditions, and sends a testing instruction to the lower computer through the Ethernet based on the testing steps, so as to control the lower computer to test the lithium battery;
step S22, the middle position machine judges whether the work step switching condition is satisfied at present, if so, the middle position machine sends a work step switching instruction to the lower position machine based on the next testing work step; if not, the process proceeds to step S21, and the current testing step is executed continuously.
Further, in the step S30, the message format specifically includes:
number of data sets + test data 1+ … … + test data n;
the format of the test data is as follows:
data sequence number 1+ test subdata 1+ … … + data sequence number n + test subdata n;
the data group number is used for identifying the number of the test data; the data sequence number is an integer greater than or equal to 0, and is sequentially increased from 0 by taking 1 as gradient, so as to identify the number of strokes of the test subdata.
Further, the step S40 specifically includes:
step S41, the middle computer sends data acquisition instructions to the lower computer periodically;
step S42, the lower computer sends the cached message data to the middle computer in real time through the Ethernet based on the received data acquisition instruction, and deletes the locally corresponding message data;
and step S43, the middle computer analyzes the message data based on the message format to obtain test data, and sends the test data to the upper computer for analysis after grouping and classifying the test data based on the data sequence number.
In a second aspect, the present invention provides a battery testing process step identification system, which includes the following modules:
the test step creating module is used for creating a test step and a step switching condition on the upper computer and sending the test step and the step switching condition to the middle computer;
the lithium battery testing module is used for controlling the lower computer to test the lithium battery based on the received testing work step and the work step switching condition;
the test data caching module is used for caching test data based on a preset message format in the test process of the lower computer to obtain message data;
and the test data step classification module is used for periodically acquiring the message data from the lower computer by the middle computer, analyzing the message data based on the message format to obtain test data, classifying the test data according to the test steps, and sending the test data to the upper computer for analysis.
Further, the test step creating module specifically includes: establishing a plurality of testing working steps and working step switching conditions corresponding to the testing working steps on an upper computer, and sending each testing working step and each working step switching condition to a middle computer through an Ethernet;
each testing step carries a testing sequence; the step switching condition is timing switching or switching when the test data meets the threshold condition.
Further, the lithium battery test module specifically includes:
the test instruction sending unit is used for receiving the test steps and the step switching conditions by the central computer, sending a test instruction to the lower computer through the Ethernet based on the test steps, and further controlling the lower computer to test the lithium battery;
the work step switching unit is used for judging whether the work step switching condition is met or not by the middle-level computer, and if the work step switching condition is met, sending a work step switching instruction to the lower-level computer based on the next test work step; if not, entering a test instruction sending unit, and continuing to execute the current test step.
Further, in the test data caching module, the message format specifically includes:
number of data sets + test data 1+ … … + test data n;
the format of the test data is as follows:
data sequence number 1+ test subdata 1+ … … + data sequence number n + test subdata n;
the data group number is used for identifying the number of the test data; the data sequence number is an integer greater than or equal to 0, and is sequentially increased from 0 by taking 1 as gradient, so as to identify the number of strokes of the test subdata.
Further, the test data step classification module specifically includes:
the data acquisition instruction sending unit is used for periodically sending data acquisition instructions to the lower computer by the middle computer;
the message data sending unit is used for sending the cached message data to the middle computer in real time through the Ethernet and deleting the locally corresponding message data by the lower computer based on the received data acquisition instruction;
and the test step identification unit is used for analyzing the message data based on the message format by the central computer to obtain test data, grouping and classifying the test data based on the data sequence number, and sending the test data to the upper computer for analysis.
The invention has the advantages that:
in the testing process, the lower computer caches the test data based on a preset message format, namely message data are generated and cached according to the format of the number of data sets, the test data 1+ … … and the test data n, and a plurality of pieces of test data are fused into one message data; after the message data are obtained from the lower computer, the middle computer can judge that the message data have several test data through the data array, because the data sequence number of each test subdata of each test data is sequentially increased from 0, and each test data corresponds to one test working step, each test subdata can be grouped and classified through the data sequence number, finally, the test working step corresponding to the test data is identified, the further analysis of the upper computer is facilitated, and the accuracy of the battery test is greatly guaranteed.
Drawings
The invention will be further described with reference to the following examples with reference to the accompanying drawings.
FIG. 1 is a flow chart of a battery testing process step identification method of the present invention.
Fig. 2 is a schematic structural diagram of a battery testing process step identification system according to the present invention.
Fig. 3 is a hardware architecture diagram of the present invention.
Detailed Description
The technical scheme in the embodiment of the application has the following general idea: the lower computer generates message data according to the format of the data group number, the test data 1+ … … and the test data n, and fuses a plurality of pieces of test data into one message data; after the message data are obtained from the lower computer, the middle computer judges that a plurality of pieces of test data exist in the message data through the data array, and groups and classifies each piece of test subdata through the data sequence number carried by the test data, so that the test step corresponding to the test data is identified, and the accuracy of battery test is guaranteed.
Referring to fig. 1 to 3, a preferred embodiment of a method for identifying battery testing steps of the present invention includes the following steps:
s10, establishing a testing step and a step switching condition on the upper computer and sending the testing step and the step switching condition to the middle computer;
s20, controlling the lower computer to test the lithium battery based on the received test steps and the step switching conditions by the middle computer;
step S30, the lower computer caches the test data based on a preset message format in the test process to obtain message data;
and step S40, the middle computer periodically acquires the message data from the lower computer, analyzes the message data based on the message format to obtain test data, classifies the test data according to the test steps, and sends the test data to the upper computer for analysis.
The step S10 specifically includes: establishing a plurality of testing working steps and working step switching conditions corresponding to the testing working steps on an upper computer, and sending each testing working step and each working step switching condition to a middle computer through an Ethernet; the testing step is a testing step of the lithium battery;
each testing step carries a testing sequence; the step switching condition is timing switching or switching when the test data meets a threshold condition, for example, the test step is automatically switched every 5 minutes, or the test step is automatically switched when the current value reaches 5A.
The step S20 specifically includes:
step S21, the middle computer receives the testing steps and the step switching conditions, and sends a testing instruction to the lower computer through the Ethernet based on the testing steps, so as to control the lower computer to test the lithium battery;
step S22, the middle position machine judges whether the work step switching condition is satisfied at present, if so, the middle position machine sends a work step switching instruction to the lower position machine based on the next testing work step; if not, the step S21 is executed to continue the current testing step.
In step S30, the message format specifically includes:
number of data sets + test data 1+ … … + test data n; sequencing the test data in sequence according to the test sequence;
the format of the test data is as follows:
data sequence number 1+ test subdata 1+ … … + data sequence number n + test subdata n;
the data group number is used for identifying the number of the test data; the data sequence number is an integer greater than or equal to 0, and the data sequence number is sequentially increased from 0 by taking 1 as a gradient and is used for identifying the number of strokes of the test subdata.
That is, one piece of test data comprises a plurality of test subdata, and one piece of test data corresponds to one test working step; the test subdata with the data sequence number of 0 represents the first test subdata of a new test process step, so that the test subdata corresponding to different test process steps can be distinguished by the data sequence number with the value of 0.
The step S40 specifically includes:
step S41, the middle computer sends data acquisition instructions to the lower computer periodically;
step S42, the lower computer sends the cached message data to the middle computer in real time through the Ethernet based on the received data acquisition instruction, and deletes the locally corresponding message data to release the local storage space for storing new message data;
and step S43, the middle computer analyzes the message data based on the message format to obtain test data, and after grouping and classifying the test data based on the data serial number, the test data are sent to the upper computer for analysis, namely the test subdata corresponding to different test process steps are distinguished by the data serial number with the value of 0, and then grouping and classifying are carried out.
The invention discloses a better embodiment of a battery test process step identification system, which comprises the following modules:
the test step creating module is used for creating a test step and a step switching condition on the upper computer and sending the test step and the step switching condition to the middle computer;
the lithium battery testing module is used for controlling the lower computer to test the lithium battery based on the received testing work step and the work step switching condition;
the test data caching module is used for caching test data based on a preset message format in the test process of the lower computer to obtain message data;
and the test data step classification module is used for periodically acquiring the message data from the lower computer by the middle computer, analyzing the message data based on the message format to obtain test data, classifying the test data according to the test steps, and sending the test data to the upper computer for analysis.
The test procedure creating module specifically comprises: establishing a plurality of testing working steps and working step switching conditions corresponding to the testing working steps on an upper computer, and sending each testing working step and each working step switching condition to a middle computer through an Ethernet; the testing step is a testing step of the lithium battery;
each testing step carries a testing sequence; the step switching condition is timing switching or switching when the test data meets a threshold condition, for example, the test step is automatically switched every 5 minutes, or the test step is automatically switched when the current value reaches 5A.
The lithium battery test module specifically comprises:
the test instruction sending unit is used for receiving the test working steps and the working step switching conditions by the central computer, sending a test instruction to the lower computer through the Ethernet based on the test working steps and further controlling the lower computer to test the lithium battery;
the work step switching unit is used for judging whether the work step switching condition is met or not by the middle-level computer, and if the work step switching condition is met, sending a work step switching instruction to the lower-level computer based on the next test work step; if not, entering a test instruction sending unit, and continuing to execute the current test step.
In the test data caching module, the message format specifically includes:
number of data sets + test data 1+ … … + test data n; sequencing the test data in sequence according to the test sequence;
the format of the test data is as follows:
data sequence number 1+ test subdata 1+ … … + data sequence number n + test subdata n;
the data group number is used for identifying the number of the test data; the data sequence number is an integer greater than or equal to 0, and the data sequence number is sequentially increased from 0 by taking 1 as a gradient and is used for identifying the number of strokes of the test subdata.
One piece of test data comprises a plurality of test subdata, and one piece of test data corresponds to one test process step; the test subdata with the data sequence number of 0 represents the first test subdata of a new test process step, so that the test subdata corresponding to different test process steps can be distinguished by the data sequence number with the value of 0.
The test data step classification module specifically comprises:
the data acquisition instruction sending unit is used for periodically sending data acquisition instructions to the lower computer by the middle computer;
the message data sending unit is used for sending the cached message data to the middle computer in real time through the Ethernet by the lower computer based on the received data acquisition instruction, and deleting the locally corresponding message data so as to release a local storage space for storing new message data;
and the test step identification unit is used for analyzing the message data based on the message format by the central computer to obtain test data, grouping and classifying the test data based on the data serial number, and sending the test data to the upper computer for analysis, namely distinguishing the test subdata corresponding to different test steps by using the data serial number with the value of 0, and further grouping and classifying.
In summary, the invention has the advantages that:
in the testing process, the lower computer caches the test data based on a preset message format, namely message data are generated and cached according to the format of the number of data sets, the test data 1+ … … and the test data n, and a plurality of pieces of test data are fused into one message data; after the message data are obtained from the lower computer, the middle computer can judge that the message data have several test data through the data array, because the data sequence number of each test subdata of each test data is sequentially increased from 0, and each test data corresponds to one test working step, each test subdata can be grouped and classified through the data sequence number, finally, the test working step corresponding to the test data is identified, the further analysis of the upper computer is facilitated, and the accuracy of the battery test is greatly guaranteed.
Although specific embodiments of the invention have been described above, it will be understood by those skilled in the art that the specific embodiments described are illustrative only and are not limiting upon the scope of the invention, and that equivalent modifications and variations can be made by those skilled in the art without departing from the spirit of the invention, which is to be limited only by the appended claims.
Claims (10)
1. A battery test process step identification method is characterized in that: the method comprises the following steps:
s10, establishing a testing step and a step switching condition on the upper computer and sending the testing step and the step switching condition to the middle computer;
s20, controlling the lower computer to test the lithium battery based on the received test steps and the step switching conditions by the middle computer;
step S30, the lower computer caches the test data based on a preset message format in the test process to obtain message data;
and step S40, the middle computer periodically acquires the message data from the lower computer, analyzes the message data based on the message format to obtain test data, classifies the test data according to the test steps, and sends the test data to the upper computer for analysis.
2. The battery test process step identification method of claim 1, wherein: the step S10 specifically includes: establishing a plurality of testing working steps and working step switching conditions corresponding to the testing working steps on an upper computer, and sending each testing working step and each working step switching condition to a middle computer through an Ethernet;
each testing step carries a testing sequence; the step switching condition is timing switching or switching when the test data meets the threshold condition.
3. The battery test process step identification method of claim 1, wherein: the step S20 specifically includes:
step S21, the middle computer receives the testing steps and the step switching conditions, and sends a testing instruction to the lower computer through the Ethernet based on the testing steps, so as to control the lower computer to test the lithium battery;
step S22, the middle position machine judges whether the work step switching condition is satisfied at present, if so, the middle position machine sends a work step switching instruction to the lower position machine based on the next testing work step; if not, the process proceeds to step S21, and the current testing step is executed continuously.
4. The battery test process step identification method of claim 1, wherein: in step S30, the message format specifically includes:
number of data sets + test data 1+ … … + test data n;
the format of the test data is as follows:
data sequence number 1+ test subdata 1+ … … + data sequence number n + test subdata n;
the data group number is used for identifying the number of the test data; the data sequence number is an integer greater than or equal to 0, and is sequentially increased from 0 by taking 1 as gradient, so as to identify the number of strokes of the test subdata.
5. The battery test process step identification method of claim 4, wherein: the step S40 specifically includes:
step S41, the middle computer sends data acquisition instructions to the lower computer periodically;
step S42, the lower computer sends the cached message data to the middle computer in real time through the Ethernet based on the received data acquisition instruction, and deletes the locally corresponding message data;
and step S43, the middle computer analyzes the message data based on the message format to obtain test data, and sends the test data to the upper computer for analysis after grouping and classifying the test data based on the data sequence number.
6. The utility model provides a battery test process step identification system which characterized in that: the system comprises the following modules:
the test step creating module is used for creating a test step and a step switching condition on the upper computer and sending the test step and the step switching condition to the middle computer;
the lithium battery testing module is used for controlling the lower computer to test the lithium battery based on the received testing work step and the work step switching condition;
the test data caching module is used for caching test data based on a preset message format in the test process of the lower computer to obtain message data;
and the test data step classification module is used for periodically acquiring the message data from the lower computer by the middle computer, analyzing the message data based on the message format to obtain test data, classifying the test data according to the test steps, and sending the test data to the upper computer for analysis.
7. The battery test process step identification system of claim 6, wherein: the test procedure creating module specifically comprises: establishing a plurality of testing working steps and working step switching conditions corresponding to the testing working steps on an upper computer, and sending each testing working step and each working step switching condition to a middle computer through an Ethernet;
each testing step carries a testing sequence; the step switching condition is timing switching or switching when the test data meets the threshold condition.
8. The battery test process step identification system of claim 6, wherein: the lithium battery test module specifically comprises:
the test instruction sending unit is used for receiving the test steps and the step switching conditions by the central computer, sending a test instruction to the lower computer through the Ethernet based on the test steps, and further controlling the lower computer to test the lithium battery;
the work step switching unit is used for judging whether the work step switching condition is met or not by the middle-level computer, and if the work step switching condition is met, sending a work step switching instruction to the lower-level computer based on the next test work step; if not, entering a test instruction sending unit and continuing to execute the current test step.
9. The battery test process step identification system of claim 6, wherein: in the test data caching module, the message format specifically includes:
number of data sets + test data 1+ … … + test data n;
the format of the test data is as follows:
data sequence number 1+ test subdata 1+ … … + data sequence number n + test subdata n;
the data group number is used for identifying the number of the test data; the data sequence number is an integer greater than or equal to 0, and the data sequence number is sequentially increased from 0 by taking 1 as a gradient and is used for identifying the number of strokes of the test subdata.
10. The battery test process step identification system of claim 9, wherein: the test data step classification module specifically comprises:
the data acquisition instruction sending unit is used for periodically sending data acquisition instructions to the lower computer by the middle computer;
the message data sending unit is used for sending the cached message data to the middle computer in real time through the Ethernet and deleting the locally corresponding message data on the basis of the received data acquisition instruction by the lower computer;
and the test step identification unit is used for analyzing the message data based on the message format by the central computer to obtain test data, grouping and classifying the test data based on the data sequence number, and sending the test data to the upper computer for analysis.
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