CN114726765A - Control method and device for lithium battery test system - Google Patents
Control method and device for lithium battery test system Download PDFInfo
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- CN114726765A CN114726765A CN202210188629.8A CN202210188629A CN114726765A CN 114726765 A CN114726765 A CN 114726765A CN 202210188629 A CN202210188629 A CN 202210188629A CN 114726765 A CN114726765 A CN 114726765A
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- H—ELECTRICITY
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- H04L43/00—Arrangements for monitoring or testing data switching networks
- H04L43/12—Network monitoring probes
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
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- H—ELECTRICITY
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Abstract
The invention provides a control method and a device of a lithium battery test system in the technical field of lithium battery test, wherein the method comprises the following steps: step S10, the middle position machine creates a first thread, a second thread, a command sending list, a data collecting period, a command response time and a time threshold; step S20, the middle computer receives the testing steps sent by the upper computer, and based on the data acquisition cycle, the testing data of the lithium battery are acquired from the lower computer at regular time through the first thread; step S30, the middle position machine analyzes the testing working steps to obtain a plurality of working step control commands and adds the commands into a command sending list; and step S40, the middle computer sends the step control commands in the command sending list to the lower computer in sequence for execution through the second thread, and monitors the execution condition of the step control commands through the command response time and the frequency threshold. The invention has the advantages that: the reliability of lithium battery test is greatly improved.
Description
Technical Field
The invention relates to the technical field of lithium battery testing, in particular to a control method and a control device of a lithium battery testing 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.
For testing of the lithium battery, a method that a middle computer controls a lower computer to test the lithium battery based on a test instruction of an upper computer and collects test data is adopted in the prior art, and the test instruction and the test data are transmitted between the middle computer and the lower computer through an Ethernet. However, the conventional method has the following disadvantages: because the data volume of the test data is very large, the throughput of a communication channel between the middle computer and the lower computer has an upper limit, packet loss may occur in the data transmission process, the transmission frequency of the test instruction is low, but the reliability and real-time requirements are high, and if the test instruction cannot be transmitted to the lower computer in time to be executed due to the packet loss, a safety accident may be caused.
Therefore, how to provide a control method and device for a lithium battery test system to improve the reliability of lithium battery tests becomes a technical problem to be solved urgently.
Disclosure of Invention
The technical problem to be solved by the invention is to provide a control method and a control device for a lithium battery test system, so that the reliability of lithium battery test is improved.
In a first aspect, the present invention provides a method for controlling a lithium battery test system, including the following steps:
step S10, the middle position machine creates a first thread, a second thread, a command sending list, a data collecting period, a command response time and a time threshold;
step S20, the middle computer receives the testing steps sent by the upper computer, and based on the data acquisition cycle, the testing data of the lithium battery are acquired from the lower computer at regular time through the first thread;
step S30, the middle position machine analyzes the testing working steps to obtain a plurality of working step control commands and adds the commands into a command sending list;
and step S40, the middle computer sends the process step control commands in the command sending list to a lower computer in sequence for execution through the second thread, and monitors the execution condition of the process step control commands through the command response time length and the frequency threshold value.
Further, in the step S10, the first thread and the second thread are both created based on the I P address and the port number of the lower computer; the command sending list is used for sequentially storing the step control commands to be executed according to the execution sequence; the data acquisition period is used for acquiring test data from the lower computer at regular time; and the command response time length and the frequency threshold value are used for judging whether the execution of the step control command is finished.
Further, the step S20 specifically includes:
step S21, the middle computer is connected with the lower computer through TCP or UDP, and the lower computer is started to test the lithium battery;
and S22, the middle computer receives the testing step sent by the upper computer, acquires the testing data of the lithium battery from the lower computer corresponding to the I P address and the port number at regular time through the first thread based on the data acquisition period, and stores the testing data into a database.
Further, the step S30 is specifically:
and the central computer analyzes the test process steps to obtain a plurality of process step control commands, selects corresponding process step control commands based on the test data, and sequentially adds the process step control commands into a command sending list based on the execution sequence carried by each selected process step control command.
Further, the step S40 specifically includes:
step S41, the middle computer packages the step control commands in the command sending list in sequence based on the execution sequence and sends the commands to the lower computer for execution through the second thread;
s42, the middle computer monitors a response message fed back by the lower computer and successfully executed, and removes a corresponding step control command from a command sending list based on the response message;
step S43, after the medium position machine judges that the command response time length passes, whether the command sending list removes the corresponding step control command or not, if yes, the next step control command is continuously monitored; if not, go to step S44;
step S44, the middle computer judges whether the retransmission times of the process step control command exceeds a time threshold value, if yes, a shutdown alarm is sent to the upper computer; if not, the corresponding step control command is sent to the lower computer again, and the step S42 is carried out.
In a second aspect, the present invention provides a control device for a lithium battery testing system, including the following modules:
the configuration module is used for the bit engine to establish a first thread, a second thread, a command sending list, a data acquisition period, a command response time and a one-time threshold;
the test data acquisition module is used for receiving the test steps sent by the upper computer by the middle computer and acquiring test data of the lithium battery from the lower computer at regular time through a first thread based on the data acquisition period;
the test step analysis module is used for analyzing the test steps by the central computer to obtain a plurality of step control commands and adding the step control commands into a command sending list;
and the work step control command sending module is used for sequentially sending the work step control commands in the command sending list to the lower computer for execution through the second thread by the central computer, and monitoring the execution condition of the work step control commands through the command response time and the frequency threshold.
Further, in the configuration module, the first thread and the second thread are both created based on the I P address and the port number of the lower computer; the command sending list is used for sequentially storing the step control commands to be executed according to the execution sequence; the data acquisition period is used for acquiring test data from the lower computer at regular time; and the command response time length and the frequency threshold value are used for judging whether the execution of the step control command is finished.
Further, the test data acquisition module specifically includes:
the lithium battery testing unit is used for establishing connection between the central computer and the lower computer through TCP or UDP and starting the lower computer to test the lithium battery;
and the test data storage unit is used for receiving the test steps sent by the upper computer by the middle computer, acquiring test data of the lithium battery from the lower computer corresponding to the I P address and the port number at regular time through the first thread based on the data acquisition period, and storing the test data into the database.
Further, the test step analysis module specifically includes:
and the central computer analyzes the test working steps to obtain a plurality of working step control commands, selects corresponding working step control commands based on the test data, and sequentially adds the working step control commands into a command sending list based on the execution sequence carried by each selected working step control command.
Further, the step control command sending module specifically includes:
the command encapsulation sending unit is used for sequentially encapsulating the process step control commands in the command sending list based on the execution sequence and then sending the process step control commands to the lower computer for execution through the second thread by the middle computer;
the response message monitoring unit is used for monitoring a response message which is fed back by the lower computer and successfully executed by the lower computer, and removing a corresponding step control command from the command sending list based on the response message;
a command sending list monitoring unit, configured to determine, by the middle bit machine, whether the corresponding step control command is removed from the command sending list after the command response duration elapses, and if so, continue to monitor the next step control command; if not, entering a retransmission time monitoring unit;
the retransmission frequency monitoring unit is used for judging whether the retransmission frequency of the process step control command exceeds a frequency threshold value or not by the central computer, and if so, sending a halt alarm to the central computer; if not, the corresponding step control command is sent to the lower computer again, and the lower computer enters a response message monitoring unit.
The invention has the advantages that:
a first thread and a second thread are created in the middle computer through the I P address and the port number of the lower computer, the first thread is used for collecting test data, the second thread is used for sending a step control command, namely the test data and the step control command are transmitted through different threads, the influence of packet loss during the transmission of the test data on the step control command is avoided, and the step control command can be transmitted to the lower computer to be executed in time; the method comprises the steps of managing the step control commands to be executed by creating a command sending list, timely removing the step control commands successfully executed based on response messages fed back by a lower computer, setting command response time and time thresholds to monitor the removal conditions of the step control commands in the command sending list, timely sending shutdown alarms to the upper computer when abnormality exists, and finally greatly improving the reliability of lithium battery testing.
Drawings
The invention will be further described with reference to the following examples with reference to the accompanying drawings.
Fig. 1 is a flowchart of a control method of a lithium battery test system according to the present invention.
Fig. 2 is a schematic structural diagram of a control device of a lithium battery test system according to the present invention.
Fig. 3 is a schematic structural diagram of a lithium battery testing system according to the present invention.
Detailed Description
The technical scheme in the embodiment of the application has the following general idea: the test data and the process step control command are respectively transmitted through the first thread and the second thread, so that the influence of packet loss during the transmission of the test data on the process step control command is avoided; the execution condition of the process step control command is monitored by setting the command response time and the frequency threshold, and a shutdown alarm is sent to the upper computer in time when abnormality exists so as to improve the reliability of the lithium battery test.
Referring to fig. 1 to 3, a preferred embodiment of a control method for a lithium battery test system according to the present invention includes the following steps:
step S10, the middle position machine creates a first thread, a second thread, a command sending list, a data collecting period, a command response time and a time threshold; by creating the first thread and the second thread, the sending of the process step control command does not need to wait until the transmission of the test data is finished, and the timeliness of the transmission of the process step control command is greatly improved;
step S20, the middle computer receives the testing steps sent by the upper computer, and based on the data acquisition cycle, the testing data of the lithium battery are acquired from the lower computer at regular time through the first thread; the test data includes at least voltage, current, and temperature;
step S30, the middle position machine analyzes the testing working steps to obtain a plurality of working step control commands and adds the commands into a command sending list;
and step S40, the middle computer sends the step control commands in the command sending list to the lower computer in sequence for execution through the second thread, and monitors the execution condition of the step control commands through the command response time and the frequency threshold.
The upper computer is connected with a plurality of middle computers, and the middle computers are connected with a plurality of lower computers; the upper computer, the middle computer and the lower computer are communicated by adopting an Ethernet and are connected and transferred by a switch; one lower computer is equivalent to one test channel.
In the step S10, the first thread and the second thread are both created based on the I P address and the port number of the lower computer, that is, the thread is created with the I P address and the port number as keys; the command sending list is used for sequentially storing the step control commands to be executed according to the execution sequence; the data acquisition period is used for acquiring test data from the lower computer at regular time; and the command response time length and the frequency threshold value are used for judging whether the execution of the step control command is finished.
The step S20 specifically includes:
step S21, the middle computer is connected with the lower computer through TCP or UDP, and the lower computer is started to test the lithium battery;
and S22, the middle computer receives the testing step sent by the upper computer, acquires the testing data of the lithium battery from the lower computer corresponding to the I P address and the port number at regular time through the first thread based on the data acquisition period, and stores the testing data into a database. And when the test data is collected, the lower computer packages the test data into a message and sends the message to the middle computer.
The step S30 specifically includes:
and the central computer analyzes the test working steps to obtain a plurality of working step control commands, selects corresponding working step control commands based on the test data, and sequentially adds the working step control commands into a command sending list based on the execution sequence carried by each selected working step control command.
When a plurality of parallel test channels exist, the test data of each test channel needs to be pre-synchronized, that is, whether the test data of all the test channels are received is detected, and then a corresponding step control command is selected based on the test data after the test data of all the test channels are received.
The step S40 specifically includes:
step S41, the middle computer packages the step control commands in the command sending list in sequence based on the execution sequence and sends the commands to the lower computer for execution through the second thread;
step S42, the middle computer monitors a response message fed back by the lower computer and successfully executed through the second thread, and removes a corresponding step control command from a command sending list based on the response message;
step S43, after the medium position machine judges that the command response time length passes, whether the command sending list removes the corresponding step control command or not, if yes, the next step control command is continuously monitored; if not, go to step S44;
step S44, the middle computer judges whether the retransmission times of the process step control command exceeds a time threshold value, if yes, a shutdown alarm is sent to the upper computer; if not, the corresponding step control command is sent to the lower computer again, and the step S42 is carried out. And monitoring the execution condition of the process step control command by setting the command response time and the frequency threshold, immediately retransmitting the process step control command if the command response time is not successfully executed, and immediately sending a halt alarm to an upper computer if the retransmission frequency exceeds the frequency threshold and is not successfully executed, so that the execution reliability of the process step control command is greatly improved.
The invention discloses a preferred embodiment of a control device of a lithium battery test system, which comprises the following modules:
the configuration module is used for the bit engine to establish a first thread, a second thread, a command sending list, a data acquisition period, a command response time and a one-time threshold; by creating the first thread and the second thread, the sending of the process step control command does not need to wait until the transmission of the test data is finished, and the timeliness of the transmission of the process step control command is greatly improved;
the test data acquisition module is used for receiving the test steps sent by the upper computer by the middle computer and acquiring test data of the lithium battery from the lower computer at regular time through a first thread based on the data acquisition period; the test data includes at least voltage, current, and temperature;
the test work step analysis module is used for analyzing the test work steps by the central computer to obtain a plurality of work step control commands and adding the work step control commands into a command sending list;
and the work step control command sending module is used for sequentially sending the work step control commands in the command sending list to the lower computer for execution through the second thread by the central computer, and monitoring the execution condition of the work step control commands through the command response time and the frequency threshold.
The upper computer is connected with a plurality of middle computers, and the middle computers are connected with a plurality of lower computers; the upper computer, the middle computer and the lower computer are communicated by adopting an Ethernet and are connected and transferred by a switch; one lower computer is equivalent to one test channel.
In the configuration module, the first thread and the second thread are established based on I P addresses and port numbers of the lower computer, namely, the threads are established by taking I P addresses and port numbers as keys; the command sending list is used for sequentially storing the step control commands to be executed according to the execution sequence; the data acquisition period is used for acquiring test data from the lower computer at regular time; and the command response time length and the frequency threshold value are used for judging whether the execution of the step control command is finished.
The test data acquisition module specifically comprises:
the lithium battery testing unit is used for establishing connection between the central computer and the lower computer through TCP or UDP and starting the lower computer to test the lithium battery;
and the test data storage unit is used for receiving the test steps sent by the upper computer by the middle computer, acquiring test data of the lithium battery from the lower computer corresponding to the I P address and the port number at regular time through the first thread based on the data acquisition period, and storing the test data into the database. And when the test data is collected, the lower computer packages the test data into a message and sends the message to the middle computer.
The test process step analysis module specifically comprises:
and the central computer analyzes the test process steps to obtain a plurality of process step control commands, selects corresponding process step control commands based on the test data, and sequentially adds the process step control commands into a command sending list based on the execution sequence carried by each selected process step control command.
When a plurality of parallel test channels exist, the test data of each test channel needs to be pre-synchronized, that is, whether the test data of all the test channels are received is detected, and then a corresponding step control command is selected based on the test data after the test data of all the test channels are received.
The step control command sending module specifically comprises:
the command encapsulation sending unit is used for sequentially encapsulating the process step control commands in the command sending list based on the execution sequence and then sending the process step control commands to the lower computer for execution through the second thread by the middle computer;
the response message monitoring unit is used for monitoring a response message which is fed back by the lower computer and successfully executed by the middle computer through the second thread and removing a corresponding step control command from a command sending list based on the response message;
a command sending list monitoring unit, configured to determine, by the middle bit machine, whether the corresponding step control command is removed from the command sending list after the command response duration elapses, and if so, continue to monitor the next step control command; if not, entering a retransmission time monitoring unit;
the retransmission frequency monitoring unit is used for judging whether the retransmission frequency of the process step control command exceeds a frequency threshold value or not by the central computer, and if so, sending a shutdown alarm to the central computer; if not, the corresponding step control command is sent to the lower computer again, and the lower computer enters a response message monitoring unit. And monitoring the execution condition of the process step control command by setting the command response time and the frequency threshold, immediately retransmitting the process step control command if the command response time is not successfully executed, and immediately sending a halt alarm to an upper computer if the retransmission frequency is not successfully executed yet and exceeds the frequency threshold, thereby greatly improving the reliability of the execution of the process step control command.
In summary, the invention has the advantages that:
a first thread and a second thread are created in the middle computer through the I P address and the port number of the lower computer, the first thread is used for collecting test data, the second thread is used for sending a step control command, namely the test data and the step control command are transmitted through different threads, the influence of packet loss during the transmission of the test data on the step control command is avoided, and the step control command can be transmitted to the lower computer to be executed in time; the method comprises the steps of managing the step control commands to be executed by creating a command sending list, timely removing the step control commands successfully executed based on response messages fed back by a lower computer, setting command response time and time thresholds to monitor the removal conditions of the step control commands in the command sending list, timely sending shutdown alarms to the upper computer when abnormality exists, and finally greatly improving the reliability of lithium battery testing.
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 control method of a lithium battery test system is characterized by comprising the following steps: the method comprises the following steps:
step S10, the middle position machine creates a first thread, a second thread, a command sending list, a data collecting period, a command response time and a time threshold;
step S20, the middle computer receives the testing steps sent by the upper computer, and based on the data acquisition cycle, the testing data of the lithium battery are acquired from the lower computer at regular time through the first thread;
step S30, the middle position machine analyzes the testing working steps to obtain a plurality of working step control commands and adds the commands into a command sending list;
and step S40, the middle computer sends the step control commands in the command sending list to the lower computer in sequence for execution through the second thread, and monitors the execution condition of the step control commands through the command response time and the frequency threshold.
2. The lithium battery test system control method of claim 1, wherein: in the step S10, the first thread and the second thread are both created based on the IP address and the port number of the lower computer; the command sending list is used for sequentially storing the step control commands to be executed according to the execution sequence; the data acquisition period is used for acquiring test data from the lower computer at regular time; and the command response time length and the frequency threshold are used for judging whether the execution of the step control command is finished.
3. The lithium battery test system control method of claim 1, wherein: the step S20 specifically includes:
step S21, the middle computer is connected with the lower computer through TCP or UDP, and the lower computer is started to test the lithium battery;
and step S22, the middle computer receives the testing step sent by the upper computer, acquires the testing data of the lithium battery from the lower computer corresponding to the IP address and the port number at regular time through the first thread based on the data acquisition cycle, and stores the testing data into a database.
4. The lithium battery test system control method of claim 1, wherein: the step S30 specifically includes:
and the central computer analyzes the test working steps to obtain a plurality of working step control commands, selects corresponding working step control commands based on the test data, and sequentially adds the working step control commands into a command sending list based on the execution sequence carried by each selected working step control command.
5. The lithium battery test system control method of claim 1, wherein: the step S40 specifically includes:
step S41, the middle computer packages the step control commands in the command sending list in sequence based on the execution sequence and sends the commands to the lower computer for execution through the second thread;
s42, the middle computer monitors a response message fed back by the lower computer and successfully executed, and removes a corresponding step control command from a command sending list based on the response message;
step S43, after the middle position machine judges that the command response time length is passed, the command sending list removes the corresponding process step control command, if yes, the next process step control command is continuously monitored; if not, go to step S44;
step S44, the middle computer judges whether the retransmission times of the process step control command exceeds a time threshold value, if yes, a shutdown alarm is sent to the upper computer; if not, the corresponding step control command is sent to the lower computer again, and the step S42 is carried out.
6. The utility model provides a lithium cell test system controlling means which characterized in that: the system comprises the following modules:
the configuration module is used for the bit engine to establish a first thread, a second thread, a command sending list, a data acquisition period, a command response time and a one-time threshold;
the test data acquisition module is used for receiving the test steps sent by the upper computer by the middle computer and acquiring test data of the lithium battery from the lower computer at regular time through a first thread based on the data acquisition period;
the test step analysis module is used for analyzing the test steps by the central computer to obtain a plurality of step control commands and adding the step control commands into a command sending list;
and the work step control command sending module is used for sequentially sending the work step control commands in the command sending list to the lower computer for execution through the second thread by the central computer, and monitoring the execution condition of the work step control commands through the command response time and the frequency threshold.
7. The lithium battery test system control device of claim 6, wherein: in the configuration module, the first thread and the second thread are established based on the IP address and the port number of the lower computer; the command sending list is used for sequentially storing the step control commands to be executed according to the execution sequence; the data acquisition period is used for acquiring test data from the lower computer at regular time; and the command response time length and the frequency threshold value are used for judging whether the execution of the step control command is finished.
8. The lithium battery test system control device of claim 6, wherein: the test data acquisition module specifically comprises:
the lithium battery testing unit is used for establishing connection between the central computer and the lower computer through TCP or UDP and starting the lower computer to test the lithium battery;
and the test data storage unit is used for receiving the test steps sent by the upper computer by the middle computer, acquiring test data of the lithium battery from the lower computer corresponding to the I P address and the port number at regular time through the first thread based on the data acquisition cycle, and storing the test data into the database.
9. The lithium battery test system control device of claim 6, wherein: the test process step analysis module specifically comprises:
and the central computer analyzes the test working steps to obtain a plurality of working step control commands, selects corresponding working step control commands based on the test data, and sequentially adds the working step control commands into a command sending list based on the execution sequence carried by each selected working step control command.
10. The lithium battery test system control device of claim 6, wherein: the step control command sending module specifically comprises:
the command packaging and sending unit is used for sequentially packaging the process step control commands in the command sending list through the second thread on the basis of the execution sequence and then sending the process step control commands to the lower computer for execution;
the response message monitoring unit is used for monitoring a response message which is fed back by the lower computer and successfully executed by the lower computer, and removing a corresponding step control command from the command sending list based on the response message;
a command sending list monitoring unit, configured to determine, by the middle bit machine, whether the corresponding step control command is removed from the command sending list after the command response duration elapses, and if so, continue to monitor the next step control command; if not, entering a retransmission time monitoring unit;
the retransmission frequency monitoring unit is used for judging whether the retransmission frequency of the process step control command exceeds a frequency threshold value or not by the central computer, and if so, sending a shutdown alarm to the central computer; if not, the corresponding step control command is sent to the lower computer again, and the lower computer enters a response message monitoring unit.
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