Short-circuit protection response monitoring control system based on battery charging and discharging

Abstract

The invention belongs to the field of battery short-circuit protection, relates to a data analysis technology, and aims to solve the problem that the short-circuit protection response performance of a battery in the charging and discharging process cannot be tested and analyzed in the prior art, in particular to a short-circuit protection response monitoring and control system based on battery charging and discharging, which comprises a monitoring and control platform, the monitoring control platform is in communication connection with a short circuit test module, an evaluation analysis module, an optimization processing module and a database; the short-circuit test module is used for performing short-circuit test analysis on the battery: marking the battery subjected to the short-circuit test analysis as a test object, and performing a charging response test and a discharging response test on the test object in sequence to obtain response data; according to the invention, short-circuit test analysis can be carried out on the battery and response data can be obtained, short-circuit protection response performance of the charging loop and the discharging loop can be fed back according to the charging response value and the discharging response value in the response data, and data support is provided for the evaluation and analysis process.

Description

Technical Field

[0001] The invention belongs to the field of battery short-circuit protection, relates to data analysis technology, and specifically is a short-circuit protection response monitoring and control system based on battery charging and discharging. Background Art

[0002] A battery short circuit refers to the premature or abnormal connection of the circuit path between the two electrodes, which causes excessive discharge of the battery, which may cause serious hazards such as battery fire or explosion. Therefore, the short-circuit protection function of the battery is very important.

[0003] The invention patent with announcement number CN116400248B discloses a method and device for determining a short-circuit fault in a battery. The fault determination method can determine that the battery has an internal short-circuit fault. At the same time, by determining the short-circuit resistance information in the battery based on an extended Kalman filter, the robustness of fault identification can be improved; however, the fault determination method cannot test and analyze the short-circuit protection response performance of the battery during the charging and discharging process, nor can it perform optimization decision analysis from an overall perspective when the response performance is abnormal, resulting in low optimization efficiency of the short-circuit protection response performance of the battery.

[0004] In view of the above technical problems, this application proposes a solution. Summary of the invention

[0005] The purpose of the present invention is to provide a short-circuit protection response monitoring and control system based on battery charging and discharging, which is used to solve the problem that the prior art cannot test and analyze the short-circuit protection response performance of the battery during the charging and discharging process; The technical problem to be solved by the present invention is: how to provide a short-circuit protection response monitoring and control system based on battery charging and discharging, which can test and analyze the short-circuit protection response performance of the battery during the charging and discharging process.

[0006] The purpose of the present invention can be achieved through the following technical solutions: A short-circuit protection response monitoring and control system based on battery charging and discharging, comprising a monitoring and control platform, wherein the monitoring and control platform is communicatively connected with a short-circuit test module, an evaluation and analysis module, an optimization processing module and a database; The short-circuit test module is used to perform short-circuit test analysis on the battery: the battery to be short-circuited is marked as a test object, and a charging response test and a discharging response test are performed on the test object in sequence to obtain response data, the response data including a charging response value CX and a discharging response value FX; the response data of the test object is sent to the evaluation and analysis module through the monitoring and control module; The evaluation and analysis module is used to evaluate and analyze the short-circuit protection response performance of the battery: numerically calculate the response data of the test object to obtain the response coefficient XY, and mark the test object as a normal object or an abnormal object through the response coefficient XY; mark the ratio of the number of abnormal objects to the number of test objects in the short-circuit test analysis of the same batch as the abnormal coefficient, and determine whether the overall short-circuit protection response performance of the batch of batteries meets the requirements through the abnormal coefficient. If the requirements are not met, an optimization processing signal is generated and sent to the optimization processing module through the monitoring and control platform; The optimization processing module is used to optimize and analyze the short-circuit protection response performance of the battery.

[0007] Furthermore, the execution process of the charging response test includes: monitoring the charging voltage of the test object in real time during the charging process, and when the charging voltage rises to a preset charging threshold, cutting off the charging circuit through a protection circuit, and marking the time difference between the cutting-off moment of the charging circuit and the moment when the charging voltage reaches the charging threshold as the charging response value CX of the test object; the execution process of the discharge response test includes: monitoring the discharge voltage of the test object in real time during the discharge process, and when the discharge voltage drops to a preset discharge threshold, cutting off the discharge circuit through a protection circuit, and marking the time difference between the cutting-off moment of the discharge circuit and the moment when the discharge voltage reaches the discharge threshold as the discharge response value FX of the test object.

[0008] Furthermore, the specific process of marking the test object as a normal object or an abnormal object includes: obtaining the response threshold XYmax through the database, and comparing the response coefficient XY of the test object with the response threshold XYmax: if the response coefficient XY is less than the response threshold XYmax, it is determined that the short-circuit protection response performance of the test object meets the requirements; if the response coefficient XY is greater than or equal to the response threshold XYmax, it is determined that the short-circuit protection response performance of the test object does not meet the requirements, and the corresponding test object is marked as an abnormal object.

[0009] Furthermore, the specific process of determining whether the overall short-circuit protection response performance of the batch of batteries meets the requirements includes: obtaining the abnormal threshold through the database, and comparing the abnormal coefficient with the abnormal threshold: if the abnormal coefficient is less than the abnormal threshold, it is determined that the overall short-circuit protection response performance of the batch of batteries meets the requirements; if the abnormal coefficient is greater than or equal to the abnormal threshold, it is determined that the overall short-circuit protection response performance of the batch of batteries does not meet the requirements.

[0010] Furthermore, the specific process of the optimization processing module optimizing and analyzing the short-circuit protection response performance of the battery includes: summing and averaging the charging response values ​​CX of all abnormal objects to obtain the charging optimization value, and summing and averaging the discharge response values ​​FX of all abnormal objects to obtain the discharge optimization value; marking the absolute value of the difference between the charging optimization value and the discharge optimization value as a unilateral optimization value, obtaining the unilateral optimization threshold through the database, and comparing the unilateral optimization value with the unilateral optimization threshold: if the unilateral optimization value is greater than or equal to the unilateral optimization threshold, marking the optimization processing mode as the unilateral optimization mode; if the unilateral optimization value is less than the unilateral optimization threshold, marking the optimization processing mode as the bidirectional optimization mode.

[0011] Furthermore, the specific process of optimization processing using the unilateral optimization mode includes: comparing the charging optimization value with the discharging optimization value: if the charging optimization value is less than the discharging optimization value, generating a discharging circuit optimization signal and sending the discharging circuit optimization signal to the manager's mobile terminal through the monitoring and control platform; if the charging optimization value is greater than the discharging optimization value, generating a charging circuit optimization signal and sending the charging circuit optimization signal to the manager's mobile terminal through the monitoring and control platform.

[0012] Furthermore, the specific process of optimization processing using the bidirectional optimization mode includes: obtaining the process optimization value of the abnormal object, summing and averaging the process optimization values ​​of all abnormal objects to obtain the process optimization coefficient, obtaining the process optimization threshold through the database, and comparing the process optimization coefficient with the process optimization threshold: if the process optimization coefficient is less than the process optimization threshold, then a production process optimization signal is generated and the production process optimization signal is sent to the mobile phone terminal of the manager through the monitoring and control platform; if the process optimization coefficient is greater than or equal to the process optimization threshold, then a dual-circuit optimization signal is generated and the dual-circuit optimization signal is sent to the mobile phone terminal of the manager through the monitoring and control platform.

[0013] Furthermore, the process of obtaining the process optimization value of the abnormal object includes: arranging the abnormal objects in the order of the charging response value CX from small to large to obtain a charging response sequence, and arranging the abnormal objects in the order of the discharge response value FX from small to large to obtain a discharge response sequence; marking the absolute value of the difference between the sequence number of the abnormal object in the charging response sequence and the sequence number in the discharge response sequence as the process optimization value of the abnormal object.

[0014] The present invention has the following beneficial effects: 1. The short-circuit test module can be used to perform short-circuit test analysis on the battery and obtain response data. According to the charging response value and the discharging response value in the response data, the short-circuit protection response performance of the charging circuit and the discharging circuit are fed back respectively, providing data support for the evaluation and analysis process; 2. The evaluation and analysis module can evaluate and analyze the short-circuit protection response performance of the battery, perform numerical calculations on the response data of the test object to obtain the response coefficient, and then differentiate the test object according to the response coefficient. Combine the marking results of all test objects to generate an abnormal coefficient. The overall short-circuit protection response performance of the test objects in the same batch is evaluated and fed back through the abnormal coefficient, and the optimization processing and analysis process is triggered in the event of an abnormality; 3. The optimization processing module can be used to optimize and analyze the short-circuit protection response performance of the battery. The optimization processing mode can be analyzed and marked from an overall perspective, and then the corresponding optimization processing mode can be used to generate targeted optimization signals to improve the optimization efficiency of the battery's short-circuit protection response performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0016] Figure 1 is a system block diagram of Embodiment 1 of the present invention; Figure 2 This is a flow chart of the method of Embodiment 2 of the present invention. DETAILED DESCRIPTION

[0017] The technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0018] Embodiment 1: Figure 1 As shown, a short-circuit protection response monitoring and control system based on battery charging and discharging includes a monitoring and control platform, which is communicatively connected to a short-circuit test module, an evaluation and analysis module, an optimization processing module and a database.

[0019] The short-circuit test module is used to perform short-circuit test analysis on the battery: the battery to be short-circuit tested and analyzed is marked as a test object, and the test object is sequentially subjected to a charging response test and a discharging response test to obtain response data, wherein the response data includes a charging response value CX and a discharging response value FX; the execution process of the charging response test includes: real-time monitoring of the charging voltage of the test object during the charging process, and when the charging voltage rises to a preset charging threshold, the charging circuit is cut off through a protection circuit, and the time difference between the cutting-off moment of the charging circuit and the moment when the charging voltage reaches the charging threshold is marked as the charging response value CX of the test object; the execution process of the discharging response test includes: real-time monitoring of the discharging voltage of the test object during the discharging process, and when the discharge voltage drops to a preset discharge threshold, the discharging circuit is cut off through a protection circuit, and the time difference between the cutting-off moment of the discharge circuit and the moment when the discharge voltage reaches the discharge threshold is marked as the discharge response value FX of the test object; the response data of the test object is sent to the evaluation and analysis module through the monitoring and control module; the short-circuit protection response performance of the charging circuit and the discharging circuit is fed back according to the charging response value and the discharging response value in the response data, respectively, to provide data support for the evaluation and analysis process.

[0020] The evaluation and analysis module is used to evaluate and analyze the short-circuit protection response performance of the battery: the response coefficient XY of the test object is obtained through the formula XY=k1×CX+k2×FX, where k1 and k2 are both proportional coefficients, and k1>k2>1; the response threshold XYmax is obtained through the database, and the response coefficient XY of the test object is compared with the response threshold XYmax: if the response coefficient XY is less than the response threshold XYmax, it is determined that the short-circuit protection response performance of the test object meets the requirements; if the response coefficient XY is greater than or equal to the response threshold XYmax, it is determined that the short-circuit protection response performance of the test object does not meet the requirements, and the corresponding test object is marked as an abnormal object; the ratio of the number of abnormal objects to the number of test objects in the same batch of short-circuit test analysis is marked. Denoted as the abnormal coefficient, the abnormal threshold is obtained through the database, and the abnormal coefficient is compared with the abnormal threshold: if the abnormal coefficient is less than the abnormal threshold, it is determined that the overall short-circuit protection response performance of the batch of batteries meets the requirements; if the abnormal coefficient is greater than or equal to the abnormal threshold, it is determined that the overall short-circuit protection response performance of the batch of batteries does not meet the requirements, and an optimization processing signal is generated and sent to the optimization processing module through the monitoring and control platform; the response data of the test object is numerically calculated to obtain the response coefficient, and then the test object is differentially marked according to the response coefficient, and the abnormal coefficient is generated by combining the marking results of all test objects. The overall short-circuit protection response performance of the test objects in the same batch is evaluated and fed back through the abnormal coefficient, and the optimization processing analysis process is triggered in the event of an abnormality.

[0021] The optimization processing module is used to optimize and analyze the short-circuit protection response performance of the battery: the charging response values ​​CX of all abnormal objects are summed and averaged to obtain the charging optimization value, and the discharge response values ​​FX of all abnormal objects are summed and averaged to obtain the discharge optimization value; the absolute value of the difference between the charging optimization value and the discharge optimization value is marked as a unilateral optimization value, and the unilateral optimization threshold is obtained through the database, and the unilateral optimization value is compared with the unilateral optimization threshold: if the unilateral optimization value is greater than or equal to the unilateral optimization threshold, the optimization processing mode is marked as a unilateral optimization mode; if the unilateral optimization value is less than the unilateral optimization threshold, the optimization processing mode is marked as a bidirectional optimization mode; the specific process of optimizing processing using the unilateral optimization mode includes: comparing the charging optimization value with the discharging optimization value: if the charging optimization value is less than the discharging optimization value, a discharging circuit optimization signal is generated and the discharging circuit optimization signal is sent to the mobile terminal of the manager through the monitoring and control platform; if the charging optimization value is greater than the discharging optimization value, a charging circuit optimization signal is generated and the charging circuit optimization signal is sent to the mobile terminal of the manager through the monitoring and control platform; using bidirectional optimization The specific process of optimizing the optimization mode includes: arranging the abnormal objects in the order of charging response value CX from small to large to obtain a charging response sequence, and arranging the abnormal objects in the order of discharge response value FX from small to large to obtain a discharge response sequence; marking the absolute value of the difference between the sequence number of the abnormal object in the charging response sequence and the sequence number in the discharge response sequence as the process optimization value of the abnormal object, summing and averaging the process optimization values ​​of all abnormal objects to obtain the process optimization coefficient, obtaining the process optimization threshold through the database, and comparing the process optimization coefficient with the process optimization threshold: if the process optimization coefficient is less than the process optimization threshold, then generating a production process optimization signal and sending the production process optimization signal to the mobile phone terminal of the manager through the monitoring and control platform; if the process optimization coefficient is greater than or equal to the process optimization threshold, then generating a dual-circuit optimization signal and sending the dual-circuit optimization signal to the mobile phone terminal of the manager through the monitoring and control platform; analyzing and marking the optimization processing mode from an overall perspective, and then using the corresponding optimization processing mode to generate targeted optimization signals to improve the optimization efficiency of the short-circuit protection response performance of the battery.

[0022] Embodiment 2: Figure 2 As shown, a short-circuit protection response monitoring and control method based on battery charging and discharging includes the following steps: Step 1: Perform short-circuit test analysis on the battery: mark the battery to be short-circuited as a test object, perform a charge response test and a discharge response test on the test object in sequence and obtain response data, and send the response data of the test object to the evaluation and analysis module through the monitoring and control module; Step 2: Evaluate and analyze the short-circuit protection response performance of the battery and mark the test object as a normal object or an abnormal object. The ratio of the number of abnormal objects to the test object is marked as an abnormal coefficient. The abnormal coefficient is used to determine whether the overall short-circuit protection response performance of the batch of batteries meets the requirements. Step 3: Optimize and analyze the short-circuit protection response performance of the battery and obtain a unilateral optimization value, and mark the optimization processing mode as a unilateral optimization mode or a bidirectional optimization mode according to the unilateral optimization value.

[0023] A short-circuit protection response monitoring and control system based on battery charging and discharging, when working, marks a battery undergoing short-circuit test analysis as a test object, performs charging response test and discharging response test on the test object in sequence and obtains response data, and sends the response data of the test object to an evaluation and analysis module through a monitoring and control module; evaluates and analyzes the short-circuit protection response performance of the battery and marks the test object as a normal object or an abnormal object, marks the ratio of the number of abnormal objects to the number of test objects as an abnormal coefficient, and determines whether the overall short-circuit protection response performance of the batch of batteries meets the requirements through the abnormal coefficient; optimizes the short-circuit protection response performance of the battery and obtains a unilateral optimization value, and marks the optimization processing mode as a unilateral optimization mode or a bidirectional optimization mode according to the unilateral optimization value.

[0024] The above contents are merely examples and explanations of the structure of the present invention. The technicians in this technical field may make various modifications or additions to the specific embodiments described or replace them in a similar manner. As long as they do not deviate from the structure of the invention or exceed the scope defined by the claims, they should all fall within the protection scope of the present invention.

[0025] The above formulas are obtained by collecting a large amount of data for software simulation and selecting a formula close to the real value. The coefficients in the formula are set by technicians in this field according to the actual situation; for example: formula XY=k1×CX+k2×FX; technicians in this field collect multiple groups of sample data and set corresponding response coefficients for each group of sample data; substitute the set response coefficients and the collected sample data into the formula, any two formulas constitute a binary linear equation group, screen the calculated coefficients and take the average, and obtain the values ​​of k1 and k2 as 3.08 and 2.79 respectively; The size of the coefficient is to quantify each parameter to obtain a specific value for subsequent comparison. The size of the coefficient depends on the amount of sample data and the preliminary setting of the corresponding response coefficient for each set of sample data by technical personnel in this field; as long as it does not affect the proportional relationship between the parameter and the quantized value, such as the response coefficient is proportional to the value of the charging response value.

[0026] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0027] The preferred embodiments of the present invention disclosed above are only used to help explain the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to only specific implementation methods. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A short circuit protection response monitoring and control system based on battery charging and discharging, characterized in that: It includes a monitoring and control platform, which is communicatively connected with a short-circuit test module, an evaluation and analysis module, an optimization processing module and a database; The short-circuit test module is used to perform short-circuit test analysis on the battery: the battery to be short-circuited is marked as a test object, and a charging response test and a discharging response test are performed on the test object in sequence to obtain response data, the response data including a charging response value CX and a discharging response value FX; the response data of the test object is sent to the evaluation and analysis module through the monitoring and control module; The evaluation and analysis module is used to evaluate and analyze the short-circuit protection response performance of the battery: numerically calculate the response data of the test object to obtain the response coefficient XY, and mark the test object as a normal object or an abnormal object through the response coefficient XY; mark the ratio of the number of abnormal objects to the number of test objects in the short-circuit test analysis of the same batch as the abnormal coefficient, and determine whether the overall short-circuit protection response performance of the batch of batteries meets the requirements through the abnormal coefficient. If the requirements are not met, an optimization processing signal is generated and sent to the optimization processing module through the monitoring and control platform; The optimization processing module is used to optimize and analyze the short-circuit protection response performance of the battery.

2. A short-circuit protection response monitoring and control system based on battery charging and discharging according to claim 1, characterized in that: The execution process of the charging response test includes: monitoring the charging voltage of the test object in real time during the charging process, and when the charging voltage rises to a preset charging threshold, cutting off the charging circuit through a protection circuit, and marking the time difference between the cutting-off moment of the charging circuit and the moment when the charging voltage reaches the charging threshold as the charging response value CX of the test object; the execution process of the discharge response test includes: monitoring the discharge voltage of the test object in real time during the discharge process, and when the discharge voltage drops to a preset discharge threshold, cutting off the discharge circuit through a protection circuit, and marking the time difference between the cutting-off moment of the discharge circuit and the moment when the discharge voltage reaches the discharge threshold as the discharge response value FX of the test object.

3. A short-circuit protection response monitoring and control system based on battery charging and discharging according to claim 2, characterized in that: The specific process of marking the test object as a normal object or an abnormal object includes: obtaining the response threshold XYmax through the database, and comparing the response coefficient XY of the test object with the response threshold XYmax: if the response coefficient XY is less than the response threshold XYmax, it is determined that the short-circuit protection response performance of the test object meets the requirements; if the response coefficient XY is greater than or equal to the response threshold XYmax, it is determined that the short-circuit protection response performance of the test object does not meet the requirements, and the corresponding test object is marked as an abnormal object.

4. A short-circuit protection response monitoring and control system based on battery charging and discharging according to claim 3, characterized in that: The specific process of determining whether the overall short-circuit protection response performance of the batch of batteries meets the requirements includes: obtaining the abnormal threshold through the database, and comparing the abnormal coefficient with the abnormal threshold: if the abnormal coefficient is less than the abnormal threshold, it is determined that the overall short-circuit protection response performance of the batch of batteries meets the requirements; if the abnormal coefficient is greater than or equal to the abnormal threshold, it is determined that the overall short-circuit protection response performance of the batch of batteries does not meet the requirements.

5. A short-circuit protection response monitoring and control system based on battery charging and discharging according to claim 4, characterized in that: The specific process of the optimization processing module optimizing and analyzing the short-circuit protection response performance of the battery includes: summing and averaging the charging response values ​​CX of all abnormal objects to obtain the charging optimization value, and summing and averaging the discharge response values ​​FX of all abnormal objects to obtain the discharge optimization value; marking the absolute value of the difference between the charging optimization value and the discharge optimization value as a unilateral optimization value, obtaining the unilateral optimization threshold through the database, and comparing the unilateral optimization value with the unilateral optimization threshold: if the unilateral optimization value is greater than or equal to the unilateral optimization threshold, the optimization processing mode is marked as the unilateral optimization mode; if the unilateral optimization value is less than the unilateral optimization threshold, the optimization processing mode is marked as the bidirectional optimization mode.

6. A short-circuit protection response monitoring and control system based on battery charging and discharging according to claim 5, characterized in that: The specific process of optimization processing using the unilateral optimization mode includes: comparing the charging optimization value with the discharging optimization value: if the charging optimization value is less than the discharging optimization value, then generating a discharging circuit optimization signal and sending the discharging circuit optimization signal to the manager's mobile terminal through the monitoring and control platform; if the charging optimization value is greater than the discharging optimization value, then generating a charging circuit optimization signal and sending the charging circuit optimization signal to the manager's mobile terminal through the monitoring and control platform.

7. A short-circuit protection response monitoring and control system based on battery charging and discharging according to claim 6, characterized in that: The specific process of optimization processing using the bidirectional optimization mode includes: obtaining the process optimization value of the abnormal object, summing and averaging the process optimization values ​​of all abnormal objects to obtain the process optimization coefficient, obtaining the process optimization threshold through the database, and comparing the process optimization coefficient with the process optimization threshold: if the process optimization coefficient is less than the process optimization threshold, then a production process optimization signal is generated and the production process optimization signal is sent to the mobile phone terminal of the manager through the monitoring and control platform; if the process optimization coefficient is greater than or equal to the process optimization threshold, then a dual-circuit optimization signal is generated and the dual-circuit optimization signal is sent to the mobile phone terminal of the manager through the monitoring and control platform.

8. A short-circuit protection response monitoring and control system based on battery charging and discharging according to claim 7, characterized in that: The process of obtaining the process optimization value of the abnormal object includes: arranging the abnormal objects in the order of the charging response value CX from small to large to obtain a charging response sequence, and arranging the abnormal objects in the order of the discharging response value FX from small to large to obtain a discharging response sequence; marking the absolute value of the difference between the sequence number of the abnormal object in the charging response sequence and the sequence number in the discharging response sequence as the process optimization value of the abnormal object.

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