An intelligent DC power supply charging and discharging protection system

Abstract

The present invention discloses an intelligent direct current power supply charge and discharge protection system, and relates to the technical field of power supply. The intelligent direct current power supply charge and discharge protection system comprises a sensor module, a power supply charge and discharge module, a communication interface module, a power supply data analysis module, a power supply data evaluation module and a protection circuit module. The present invention controls the charge and discharge process of the direct current power supply by monitoring the voltage and current data of the power supply charge and discharge and the environmental parameter data of the power supply, is connected to an external circuit, controls the power supply to supply power to a load, communicates and exchanges data with other modules with the acquired data, and analyzes the power supply charge and discharge protection evaluation model to detect special situations of overcharge, overdischarge, overtemperature and short circuit. When a special situation is detected, measures such as disconnecting the power supply output, limiting the current and activating the alarm are immediately taken, thereby achieving the effect of improving the sensitivity of monitoring the charge and discharge protection of the power supply, and solving the problem of insensitivity of monitoring the charge and discharge protection of the power supply in the prior art.

Description

Technical Field

[0001] The present invention relates to the technical field of power supply, and in particular to an intelligent direct current power supply charging and discharging protection system. Background Art

[0002] With the increase in power demand and voltage stability requirements of electronic equipment, DC power supplies, especially switching power supplies, have been widely used. They are usually efficient, compact and lightweight, but at the same time they also put forward higher requirements for the protection system. Based on these background technologies, the intelligent DC power supply charge and discharge protection system integrates microprocessors, sensors, communication interfaces, etc. to form a system that can monitor the power supply and battery status in real time, automatically adjust the charge and discharge parameters, and respond to various faults in a timely manner, thereby ensuring the safe, efficient and reliable operation of the power supply system.

[0003] The existing intelligent DC power supply charging and discharging protection system is implemented through the following technologies, including: Overcharge protection: When the battery voltage exceeds the preset safety value, the system will take measures to stop charging to prevent the battery from overcharging and extend the battery life. Over-discharge protection: When the battery voltage is below a certain level, the system will disconnect the discharge circuit to prevent the battery from over-discharging, which can avoid battery damage and performance degradation. Temperature monitoring: The battery temperature will rise during the charging and discharging process. The intelligent system will monitor the battery temperature. When the temperature is too high, the charging and discharging process will be interrupted to prevent the battery from overheating and potential fire risks. Current limitation: By limiting the maximum current during charging and discharging, the battery is protected from damage by excessive current.

[0004] For example, a battery charge and discharge protection circuit disclosed in the publication number CN110429692A includes: a battery charge and discharge protection circuit, including a resistor R22, a transistor Q2, an operational amplifier U3A, an operational amplifier U3B, a MOS tube Q3, a light-emitting diode LED1 and a light-emitting diode LED2, one end of the resistor R22 is respectively connected to the emitter of the transistor Q2, a resistor R23, the other end of the resistor R22, a resistor R25 and a DC power supply input terminal S_HV2, the other end of the resistor R23 is respectively connected to the base of the transistor Q2 and the resistor R26, the other end of the resistor R26 is respectively connected to the resistor R27a and the resistor R27b, and the other end of the resistor R27a is respectively connected to the resistor R27b and the collector of the transistor Q4. The present invention is designed in consideration of the floating pressure problem existing when the battery is not connected to a load. While ensuring that the battery can be fully charged, it can also protect the charging and discharging of the battery, effectively prolonging the service life of the battery, with high safety, and no MCU is used for control, and the manufacturing cost is low.

[0005] For example, the battery charge and discharge management and protection system and DC power supply announced with announcement number: CN113644725B include: a battery charge and discharge management and protection system and a DC power supply, the system includes a discharge protection module, the discharge protection module includes: a discharge control unit, the first end of the discharge control unit is connected to the first end of the battery, and is used to control whether the battery is discharged; a current detection unit, the first end of which is connected to the second end of the discharge control unit, the second end of the current detection unit is connected to the first output end of the power supply module, and is used to detect the discharge current of the battery; a first current comparison unit, the input end of which is connected to the first end of the current detection unit, the output end of the first current comparison unit is connected to the control end of the discharge control unit, and is used to output a discharge stop signal to the discharge control unit when the discharge current of the battery is greater than the discharge current threshold, so as to control the battery to stop discharging, thereby effectively avoiding the instantaneous over-power damage to the power supply module caused by the abnormal short circuit at the output end of the power supply module and the instantaneous discharge of the battery.

[0006] However, in the process of implementing the technical solution of the invention in the embodiments of the present application, the present application found that the above technology has at least the following technical problems:

[0007] In the prior art, since the power supply charge and discharge protection system is an electronic system used to protect batteries and power supply equipment, as time goes by, the components in the circuit may age, resulting in a decrease in performance and a slow response speed. The power supply charge and discharge protection system has the problem of insensitive monitoring of the power supply charge and discharge protection. Summary of the invention

[0008] The embodiment of the present application solves the problem of insensitive monitoring power supply charge and discharge protection in the prior art by providing an intelligent DC power supply charge and discharge protection system, thereby achieving the effect of improving the sensitivity of monitoring power supply charge and discharge protection.

[0009] The embodiment of the present application provides an intelligent DC power supply charging and discharging protection system, including: a sensor module: used to monitor the voltage and current data of power supply charging and discharging, and obtain the environmental parameter data of the power supply; a power supply charging and discharging module: used to control the charging and discharging process of the DC power supply, connected to the external circuit, and control the power supply to supply power to the load; a communication interface module: used to communicate and exchange data with the power management module, the sensor module, the power supply charging and discharging module, the power supply data analysis module, the power supply data evaluation module and the protection circuit module; the power supply data analysis module: used to construct the obtained power supply charging and discharging voltage and current data and the environmental parameter data of the power supply into a model to obtain a power supply charging and discharging protection evaluation model; the power supply data evaluation module: used to obtain the power supply charging and discharging protection evaluation coefficient by analyzing the power supply charging and discharging protection evaluation model; the protection circuit module: used to detect special situations of overcharging, over-discharging, over-temperature and short circuit, and immediately take measures to disconnect the power supply output, limit the current and activate the alarm when the special situation is detected.

[0010] Further, the sensor module includes: a voltage and current unit for power supply charging and discharging and an environmental parameter data acquisition unit for power supply charging and discharging;

[0011] The power supply charging and discharging voltage and current unit is used to measure the charging and discharging voltage and current of the power supply in real time; the power supply charging and discharging environmental parameter data acquisition unit is used to monitor the environmental parameters of the power supply in real time, including temperature-related data, humidity-related data and electromagnetic interference-related data.

[0012] Furthermore, the specific control process of controlling the charging and discharging process of the DC power supply is as follows:

[0013] According to the battery status and load requirements, the charging power and voltage are adjusted through the power charging and discharging module. After detecting the type and size of the load connected to the power supply, the appropriate voltage and current are provided to the power supply. By adjusting the power supply output, the discharge current is controlled.

[0014] Furthermore, the specific process of communication and data exchange is as follows:

[0015] The power supply voltage and current data and power supply environment parameter data obtained in the sensor module are communicated and exchanged with the power supply charging and discharging module, the power supply data analysis module, the power supply data evaluation module and the protection circuit module through the communication interface module.

[0016] Furthermore, the obtained voltage and current data of power supply charging and discharging and the environmental parameter data of the power supply are constructed into a specific construction process of the model:

[0017] The collected power supply charging and discharging voltage and current data and the power supply environmental parameter data are filtered, denoised and normalized to obtain preprocessed power supply charging and discharging voltage and current data and preprocessed power supply environmental parameter data, improve data quality, extract features from the preprocessed power supply charging and discharging voltage and current data and the preprocessed power supply environmental parameter data, and build a power supply charging and discharging protection evaluation model based on the extracted feature data.

[0018] Furthermore, the specific analysis process of analyzing the power supply charging and discharging protection evaluation model is as follows:

[0019] The data collected by the sensor module is divided into a training set, a validation set and a test set. The training set is used to train the power supply charge and discharge protection evaluation model. The accuracy and stability of the power supply charge and discharge protection evaluation model are corrected by adjusting the parameters and structure of the power supply charge and discharge protection evaluation model to obtain the power supply charge and discharge protection evaluation coefficient. The trained power supply charge and discharge protection evaluation model is evaluated using the validation set and the test set to evaluate the generalization ability of the power supply charge and discharge protection evaluation model. The training effect of the power supply charge and discharge protection evaluation model is judged according to the generalization ability of the power supply charge and discharge protection evaluation model.

[0020] Further, the specific detection process of immediately taking measures to disconnect the power output, limit the current and activate the alarm when a special situation is detected:

[0021] The sensor module monitors the output current, power supply output voltage and environmental parameters of the power supply in real time, and sets corresponding protection thresholds. When an abnormal signal is detected and the power supply charge and discharge protection evaluation coefficient exceeds the protection threshold, the system immediately disconnects the power supply output, limits the current and activates the alarm to protect the charge and discharge of the power supply. After the protection measures are implemented, the system enters the protection state and waits for the special situation to be resolved. When the special situation is resolved, the system restores the power output and restarts.

[0022] Furthermore, the specific construction process of constructing the power supply charging and discharging protection evaluation model based on the extracted characteristic data is as follows:

[0023] Features are extracted from the power supply voltage and current data to obtain power supply voltage and current feature data. Features are extracted from the power supply environment parameter data to obtain power supply environment parameter feature data. A power supply voltage and current evaluation model is constructed based on the power supply voltage and current feature data and the machine learning algorithm. A power supply environment parameter evaluation model is constructed based on the power supply environment parameter data and a rule-based method. The power supply charging and discharging protection evaluation model is obtained through a comprehensive evaluation of the power supply voltage and current evaluation model and the power supply environment parameter evaluation model.

[0024] Furthermore, the specific constraint formula of the power supply charging and discharging protection evaluation coefficient is:

[0025]

[0026] In the formula, It represents the power supply charge and discharge protection evaluation coefficient, which is used to evaluate the comprehensive impact of power supply voltage, current and power supply environment parameters on power supply charge and discharge protection. Indicates the power supply voltage and current evaluation coefficient, which is used to evaluate the impact on power supply charge and discharge protection. It represents the power supply environment parameter evaluation coefficient, which is used to evaluate the impact on power supply charging and discharging protection. e represents a natural constant.

[0027] Furthermore, the specific method for protecting the charging and discharging of the power supply is:

[0028] Monitor the battery voltage, current and environmental parameters in real time, control the charge and discharge of the power supply, adjust the discharge current and discharge voltage, and set the corresponding protection threshold. When an abnormal signal is detected and the power supply charge and discharge protection evaluation coefficient exceeds the protection threshold, the system immediately takes measures such as disconnecting the power supply output, limiting the current and activating the alarm to protect the charge and discharge of the power supply. Through the communication interface module, the system communicates with external devices to monitor the power supply status and execute power supply charge and discharge protection measures.

[0029] One or more technical solutions provided in the embodiments of the present application have at least the following technical effects or advantages:

[0030] 1. By real-time monitoring of the voltage and current of the battery under the influence of different electromagnetic interference intensities, the power supply is charged and discharged, thereby adjusting the discharge current and discharge voltage, thereby achieving the effect of improving the sensitivity of the monitoring power supply charge and discharge protection, and effectively solving the problem of insensitive monitoring power supply charge and discharge protection in the prior art.

[0031] 2. A power supply charge and discharge protection evaluation model is constructed through the extracted feature data, so that the training effect of the power supply charge and discharge protection evaluation model is judged according to the generalization ability of the power supply charge and discharge protection evaluation model, thereby achieving the effect of improving the accuracy of monitoring power supply charge and discharge protection, and effectively solving the problem of inaccurate monitoring of power supply charge and discharge protection in the prior art.

[0032] 3. After implementing the protection measures, the system enters the protection state, so that the system restores the power output and restarts, thereby achieving the effect of improving the stability of the monitoring power supply charging and discharging protection, and effectively solving the problem of unstable monitoring power supply charging and discharging protection in the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 A schematic diagram of the structure of the intelligent DC power supply charging and discharging protection system provided in an embodiment of the present application;

[0034] Figure 2 A schematic diagram of the structure of a sensor module in the intelligent DC power supply charging and discharging protection system provided in an embodiment of the present application;

[0035] Figure 3 An image of the power supply voltage and current evaluation coefficients in the intelligent DC power supply charging and discharging protection system provided in an embodiment of the present application. DETAILED DESCRIPTION

[0036] The embodiment of the present application solves the problem of insensitive monitoring of power supply charge and discharge protection in the prior art by providing an intelligent DC power supply charge and discharge protection system. A power supply charge and discharge protection evaluation model is constructed by extracting feature data, so that the training effect of the power supply charge and discharge protection evaluation model is judged according to the generalization ability of the power supply charge and discharge protection evaluation model, thereby improving the sensitivity of monitoring power supply charge and discharge protection.

[0037] The technical solution in the embodiment of the present application is to solve the problem of insensitive charging and discharging protection of the above-mentioned control power supply, and the overall idea is as follows:

[0038] By monitoring the voltage and current data and environmental parameter data of power supply charging and discharging, controlling the charging and discharging process of the DC power supply and supplying power to the load, communicating and exchanging data with the power management module, the sensor module, the power supply charging and discharging module, the power supply data analysis module, the power supply data evaluation module and the protection circuit module through the communication interface module, constructing the obtained voltage and current data of power supply charging and discharging and the environmental parameter data of the power supply into a model, and analyzing the power supply charging and discharging protection evaluation model to detect special situations such as overcharging, over-discharging, over-temperature and short circuit, and immediately taking measures to disconnect the power supply output, limit the current and activate the alarm when special situations are detected, thereby achieving the effect of improving the sensitivity of monitoring the power supply charging and discharging protection.

[0039] In order to better understand the above technical solution, the above technical solution will be described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0040] like Figure 1 As shown, it is a structural schematic diagram of the intelligent DC power supply charging and discharging protection system provided in the embodiment of the present application. The intelligent DC power supply charging and discharging protection system provided in the embodiment of the present application includes: a sensor module: used to monitor the voltage and current data of the power supply charging and discharging, and obtain the environmental parameter data of the power supply;

[0041] Power supply charging and discharging module: used to control the charging and discharging process of the DC power supply, connected to the external circuit, and controls the power supply to the load;

[0042] Communication interface module: used for communication and data exchange with the power management module, sensor module, power charging and discharging module, power data analysis module, power data evaluation module and protection circuit module;

[0043] Power supply data analysis module: used to construct a model with the obtained voltage and current data of power supply charging and discharging and the environmental parameter data of the power supply to obtain a power supply charging and discharging protection evaluation model;

[0044] Power supply data evaluation module: used to obtain the power supply charge and discharge protection evaluation coefficient by analyzing the power supply charge and discharge protection evaluation model.

[0045] Protection circuit module: used to detect special conditions such as overcharging, over-discharging, over-temperature and short circuit, and immediately take measures to disconnect power output, limit current and activate alarm when special conditions are detected.

[0046] Further, such as Figure 2 As shown, the sensor module includes: a voltage and current unit for power supply charging and discharging and an environmental parameter data acquisition unit for power supply charging and discharging;

[0047] The voltage and current unit for power supply charging and discharging is used to measure the charging and discharging voltage and current of the power supply in real time. The environmental parameter data acquisition unit for power supply charging and discharging is used to monitor the environmental parameters of the power supply in real time, including temperature, humidity and electromagnetic interference.

[0048] In this embodiment, the voltage and current unit of the power supply charging and discharging is usually implemented by a voltage sensor and a current transformer. The voltage sensor is installed at the output end of the power supply to measure the output voltage; the current transformer is used to measure the current flowing through the power supply; the environmental parameter data acquisition unit of the power supply charging and discharging usually includes a temperature sensor, a humidity sensor and an electromagnetic interference sensor to monitor the environmental conditions around the power supply in real time. The sensor module ensures the safe operation of the power supply system by monitoring the voltage, current and environmental parameters of the power supply in real time.

[0049] Furthermore, the specific control process of controlling the charging and discharging process of the DC power supply is as follows:

[0050] According to the battery status and load requirements, the charging power and voltage are adjusted through the power charging and discharging module, and then the type and size of the load connected to the power supply are detected, and the appropriate voltage and current are provided to the power supply. By adjusting the power supply output, the discharge current is controlled.

[0051] In this embodiment, the intelligent DC power supply charge and discharge protection system first detects the battery status, determines whether the battery needs to be charged or discharged, and when to start the charge and discharge process. If the battery needs to be charged, the intelligent DC power supply charge and discharge protection system will start the charging control process. If the battery needs to be discharged, the intelligent DC power supply charge and discharge protection system will start the discharge control process. These control processes may be implemented through a microcontroller or a dedicated circuit board. The system may also include a user interface for displaying the battery status and configuring the charge and discharge parameters.

[0052] Furthermore, the specific process of communication and data exchange is as follows:

[0053] The power supply voltage and current data and power supply environment parameter data obtained in the sensor module are communicated and exchanged with the power supply charging and discharging module, the power supply data analysis module, the power supply data evaluation module and the protection circuit module through the communication interface module.

[0054] In this embodiment, the sensor module monitors the voltage and current of the input power supply, as well as environmental parameters such as the temperature inside the charger. The communication interface module transmits this data to the charge and discharge module to adjust the charging power and voltage. At the same time, the data analysis module evaluates the charging process, and the protection circuit module immediately cuts off the power supply when an abnormality is detected to perform intelligent DC power supply charge and discharge protection.

[0055] Furthermore, the obtained voltage and current data of power supply charging and discharging and the environmental parameter data of the power supply are constructed into a specific construction process of the model:

[0056] The collected power supply charging and discharging voltage and current data and the power supply environmental parameter data are filtered, denoised and normalized to obtain preprocessed power supply charging and discharging voltage and current data and preprocessed power supply environmental parameter data, improve data quality, extract features from the preprocessed power supply charging and discharging voltage and current data and the preprocessed power supply environmental parameter data, and build a power supply charging and discharging protection evaluation model based on the extracted feature data.

[0057] In this embodiment, a digital filter is used to remove high-frequency noise in the voltage and current signals and retain useful signal components. A linear filter in the noise elimination algorithm is applied to further reduce noise interference and improve data quality. The processed voltage and current data are normalized to be in the same dimension and range to facilitate subsequent feature extraction and model training. Features are extracted from time series data, and the spectral components of the voltage and current signals are extracted by the fast Fourier transform method. The time domain and frequency domain features are combined to extract time-frequency information that can characterize the data characteristics.

[0058] Furthermore, the specific analysis process of analyzing the power supply charging and discharging protection evaluation model is as follows:

[0059] The data collected by the sensor module is divided into a training set, a validation set and a test set. The training set is used to train the power supply charge and discharge protection evaluation model. The accuracy and stability of the power supply charge and discharge protection evaluation model are corrected by adjusting the parameters and structure of the power supply charge and discharge protection evaluation model to obtain the power supply charge and discharge protection evaluation coefficient. The trained power supply charge and discharge protection evaluation model is evaluated using the validation set and the test set to evaluate the generalization ability of the power supply charge and discharge protection evaluation model. The training effect of the power supply charge and discharge protection evaluation model is judged according to the generalization ability of the power supply charge and discharge protection evaluation model.

[0060] In this embodiment, the data collected by the sensor module is divided into a training set, a validation set, and a test set. The training set is used to train the model, that is, by learning these data, the model can learn how to identify and predict normal and abnormal behaviors during the charging and discharging process of the power supply. The validation set is used to adjust the parameters of the model during the training process to avoid overfitting. Through the performance of the validation set, we can select the best model parameters and structure. The test set is used to evaluate the generalization ability of the model, that is, the performance of the model on unseen data. Parameter adjustment uses the training set to train the model, and iteratively optimizes the model parameters to improve the prediction accuracy of the model. Structural adjustment requires adjusting the structure of the model, such as increasing or decreasing the number of layers, changing the activation function of each layer, etc., to improve the stability and accuracy of the model.

[0061] Further, the specific detection process of immediately taking measures to disconnect the power output, limit the current and activate the alarm when a special situation is detected:

[0062] The sensor module monitors the output current, power supply output voltage and environmental parameters of the power supply in real time, and sets corresponding protection thresholds. When an abnormal signal is detected and the power supply charge and discharge protection evaluation coefficient exceeds the protection threshold, the system immediately disconnects the power supply output, limits the current and activates the alarm to protect the charge and discharge of the power supply. After the protection measures are implemented, the system enters the protection state and waits for the special situation to be resolved. When the special situation is resolved, the system restores the power output and restarts.

[0063] In this embodiment, the sensor module measures the output current, output voltage and environmental parameters of the power supply in real time, sets the current threshold, voltage threshold and environmental parameter threshold, and the intelligent DC power supply charging and discharging protection system continuously monitors the sensor data. When the monitored current, voltage or environmental parameter data exceeds the preset protection threshold, the system considers that there is an abnormal situation. Once an abnormal signal is detected, the system will immediately take protective measures, such as disconnecting the power output, limiting current flow or activating an alarm.

[0064] Furthermore, the specific construction process of constructing the power supply charging and discharging protection evaluation model based on the extracted characteristic data is as follows:

[0065] Features are extracted from the power supply voltage and current data to obtain power supply voltage and current feature data. Features are extracted from the power supply environment parameter data to obtain power supply environment parameter feature data. A power supply voltage and current evaluation model is constructed based on the power supply voltage and current feature data and the machine learning algorithm. A power supply environment parameter evaluation model is constructed based on the power supply environment parameter data and a rule-based method. The power supply charging and discharging protection evaluation model is obtained through a comprehensive evaluation of the power supply voltage and current evaluation model and the power supply environment parameter evaluation model.

[0066] In this embodiment, key features such as average value, standard deviation, maximum value, minimum value, slope, peak value, etc. are extracted from the voltage and current data of the power supply, and these features can characterize the charge and discharge state and performance of the power supply. Key features such as temperature, humidity, air pressure, light, etc. are extracted from the environmental parameter data of the power supply, and these features can affect the performance and safety of the power supply. An evaluation model is constructed using the extracted voltage and current feature data, such as a classification model or regression model based on a machine learning algorithm, which is used to predict the charge and discharge state and potential failures of the power supply. An evaluation model such as a rule-based engine or a deep learning model is constructed using the extracted environmental parameter feature data, which is used to predict the impact of environmental changes on power supply performance. The voltage and current evaluation model and the environmental parameter evaluation model are integrated into a unified framework to obtain an overall power supply charge and discharge protection evaluation, and a power supply charge and discharge protection evaluation model is obtained. This model will comprehensively consider the voltage and current data and the environmental parameter data to more comprehensively evaluate the charge and discharge protection state of the power supply.

[0067] Furthermore, the specific method for protecting the charging and discharging of the power supply is:

[0068] Monitor the battery voltage, current and environmental parameters in real time, control the charge and discharge of the power supply, adjust the discharge current and discharge voltage, and set the corresponding protection threshold. When an abnormal signal is detected and the power supply charge and discharge protection evaluation coefficient exceeds the protection threshold, the system immediately takes measures such as disconnecting the power supply output, limiting the current and activating the alarm to protect the charge and discharge of the power supply. Through the communication interface module, the system communicates with external devices to monitor the power supply status and execute power supply charge and discharge protection measures.

[0069] In this embodiment, a control algorithm is used to adjust the discharge current and discharge voltage according to the current state of the battery and environmental parameters to optimize the performance of the battery and extend its life. The protection threshold of the power supply charge and discharge is obtained through the database. When the power supply charge and discharge protection evaluation coefficient exceeds the protection threshold, the intelligent DC power supply charge and discharge protection system will adjust the control strategy according to the battery response and real-time data feedback. The communication interface module exchanges data with external devices to monitor the power supply status and execute protection measures. The external device can remotely control the charge and discharge behavior of the power supply through the communication interface. The above-mentioned monitoring, control, protection and communication functions are integrated into a system to ensure efficient operation, and a user interface is provided to enable users to view the battery status, set parameters and receive alarms.

[0070] Furthermore, the specific constraint formula of the power supply charging and discharging protection evaluation coefficient is:

[0071]

[0072] In the formula, It represents the power supply charge and discharge protection evaluation coefficient, which is used to evaluate the comprehensive impact of power supply voltage, current and power supply environment parameters on power supply charge and discharge protection. Indicates the power supply voltage and current evaluation coefficient, which is used to evaluate the impact on power supply charge and discharge protection. It represents the power supply environment parameter evaluation coefficient, which is used to evaluate the impact on power supply charging and discharging protection. e represents a natural constant.

[0073] In this embodiment, the specific constraint formula of the power supply voltage and current evaluation coefficient is:

[0074]

[0075] In the formula, It represents the power supply voltage and current evaluation coefficient, which is used to evaluate the influence of power supply voltage and current on power supply charge and discharge protection. A represents the input voltage of DC power supply, A0 represents the standard input voltage of DC power supply, B represents the input current of DC power supply, B0 represents the standard input current of DC power supply, C represents the output voltage of DC power supply, C0 represents the standard output voltage of DC power supply, D represents the output current of DC power supply, D0 represents the standard output current of DC power supply, E represents the power capacity of DC power supply, and e represents the natural constant.

[0076] The power supply voltage and current evaluation coefficients can also be obtained by analyzing the power supply's past operating data, including historical records of voltage and current, to identify possible abnormal patterns through statistical analysis of historical data.

[0077] In a specific embodiment, the power supply voltage and current evaluation coefficient data are exemplified in the following table.

[0078] Table 1 Example of power supply voltage and current evaluation coefficient data

[0079]

[0080]

[0081] From the data in Table 1, it can be seen that when the input voltage, input current and power capacity of the DC power supply are fixed, by observing groups 1-5 of data, the image of the power supply voltage and current evaluation coefficient is as follows: Figure 3 As shown, the greater the output voltage of the DC power supply, the lower the power supply voltage and current evaluation coefficient, and the output voltage of the DC power supply is negatively correlated with the power supply voltage and current evaluation coefficient.

[0082] The input voltage of the DC power supply refers to the DC voltage value specified when the intelligent power supply system is designed to ensure the normal operation of the system. This input voltage value is the lower limit of the voltage range that the system can handle. Exceeding this value may cause system damage or unstable operation. The input voltage range of the DC power supply is 5-10V, and the standard input voltage of the DC power supply is 6V.

[0083] The input current of a DC power supply refers to the current received from the power supply, that is, the current provided by the power supply to an external device or battery. During the charging process, the input current may represent the current that the power supply charges the battery. During the discharge process, the input current may represent the current provided from the battery to the external load. The input current of a DC power supply ranges from 10-20A, and the standard input current of a DC power supply is 16A.

[0084] The output voltage of a DC power supply refers to the external voltage provided by the power supply system to the load. This output voltage is regulated and controlled by the system to ensure that the power supply can provide stable and safe voltage supply under different load conditions. The output voltage of a DC power supply ranges from 1 to 5V, and the standard output voltage of a DC power supply is 4V.

[0085] The output current of a DC power supply refers to the ability of the power supply system to provide current to the load. This output current is adjusted and controlled by the power supply system according to the load requirements to ensure that the power supply can provide a stable and safe current supply under different load conditions. The output current of a DC power supply ranges from 5 to 15A, and the standard output current of a DC power supply is 14A.

[0086] The power capacity of a DC power supply refers to the maximum current or maximum power output capability that the power supply can provide. Power capacity is an important parameter to measure power performance. It is directly related to how much load the power supply can support and how long it can continuously supply power. The power capacity of a DC power supply ranges from 5-10mAh.

[0087] In this embodiment, the specific constraint formula of the power environment parameter evaluation coefficient is:

[0088]

[0089] In the formula, It represents the power supply environment parameter evaluation coefficient, which is used to evaluate the influence of the power supply environment parameters on the power supply charging and discharging protection. F represents the operating temperature of the DC power supply, F0 represents the standard operating temperature of the DC power supply, G represents the operating humidity of the DC power supply, G0 represents the standard operating humidity of the DC power supply, H represents the power frequency of the DC power supply, J represents the electromagnetic interference intensity of the DC power supply, and e represents a natural constant.

[0090] The power supply environmental parameter evaluation coefficient can also be used to construct a fault tree to analyze a series of failures and their impacts that may be caused by various environmental parameter anomalies, thereby evaluating the impact of environmental parameters on the power supply system.

[0091] In a specific embodiment, the power environment parameter evaluation coefficient data is exemplified in the following table.

[0092] Table 2 Example of power supply environment parameter evaluation coefficient data

[0093]

[0094]

[0095] It can be seen from the data in Table 2 that when the working temperature of the DC power supply is constant, by observing groups 1-4 of data, the higher the working humidity of the DC power supply, the smaller the power supply environment parameter evaluation coefficient, the higher the power supply frequency of the DC power supply, the smaller the power supply environment parameter evaluation coefficient, the working humidity of the DC power supply and the power supply frequency of the DC power supply are negatively correlated with the power supply environment parameter evaluation coefficient, the smaller the electromagnetic interference intensity of the DC power supply, the smaller the power supply environment parameter evaluation coefficient, and the electromagnetic interference intensity of the DC power supply is positively correlated with the power supply environment parameter evaluation coefficient.

[0096] The operating temperature of a DC power supply refers to the ambient temperature of the environment in which the power supply is located under normal operating conditions. The operating temperature usually has a specified range. The operating temperature includes not only the temperature of the power supply housing, but also the temperature of the internal electronic components. In some cases, it may be necessary to monitor the temperature inside the power supply to ensure that the operating temperature of all key components is within a safe range. The operating temperature range of a DC power supply is 20-25°C, and the standard operating temperature of a DC power supply is 23°C.

[0097] The working humidity of a DC power supply refers to the humidity level of the environment in which the power supply is located under normal operating conditions. Working humidity includes relative humidity (RH) and absolute humidity (AH), which respectively describe the content of water vapor and humidity state in the air. The working humidity of a DC power supply ranges from 50-60%, and the standard working humidity of a DC power supply is 50%.

[0098] The power frequency of a DC power supply refers to the frequency of the input AC power supply. AC power supply is a common power supply method, and DC power supply is usually converted from AC power supply through a converter. The power frequency of a DC power supply ranges from 100-200Hz.

[0099] The electromagnetic interference intensity of a DC power supply refers to the intensity of the electromagnetic wave interference generated by the power supply during operation. Electromagnetic interference refers to the propagation of electromagnetic waves in space, which may cause interference to other electronic equipment or systems. The value range of the electromagnetic interference intensity of a DC power supply is 0.3-0.7dbμV.

[0100] The technical scheme in the above-mentioned embodiment of the present application has at least the following technical effects or advantages: relative to a battery charge and discharge protection circuit disclosed in publication number: CN110429692A, the embodiment of the present application constructs a power supply charge and discharge protection evaluation model through extracted feature data, thereby judging the training effect of the power supply charge and discharge protection evaluation model according to the generalization ability of the power supply charge and discharge protection evaluation model, thereby achieving the effect of improving the sensitivity of monitoring power supply charge and discharge protection; relative to the battery charge and discharge management and protection system and DC power supply announced in announcement number: CN113644725B, the embodiment of the present application controls the charge and discharge of the power supply by real-time monitoring of the battery voltage, current and environmental parameters, thereby adjusting the discharge current and discharge voltage, thereby achieving the effect of improving the accuracy of monitoring power supply charge and discharge protection.

[0101] Those skilled in the art will appreciate that embodiments of the present invention may be provided as methods, systems, or computer program products. Therefore, the present invention may take the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware. Moreover, the present invention may take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0102] The present invention is described with reference to flowcharts and / or block diagrams of systems, devices (systems), and computer program products according to embodiments of the present invention. It should be understood that each process and / or block in the flowchart and / or block diagram, as well as the combination of processes and / or blocks in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to produce a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 A process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0103] These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing device to operate in a specific manner, so that the instructions stored in the computer-readable memory produce an article of manufacture comprising an instruction device, which implements the process Figure 1 A process or multiple processes and / or boxes Figure 1 A function specified in one or more boxes.

[0104] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operating steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing instructions for implementing the process. Figure 1 A process or multiple processes and / or boxes Figure 1 A step that specifies a function in one or more boxes.

[0105] Although the preferred embodiments of the present invention have been described, those skilled in the art may make other changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the present invention.

[0106] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. An intelligent DC power supply charging and discharging protection system, characterized in that: include: Sensor module: used to monitor the voltage and current data of power supply charging and discharging, and obtain the environmental parameter data of power supply; Power supply charging and discharging module: used to control the charging and discharging process of the DC power supply, connected to the external circuit, and controls the power supply to the load; Communication interface module: used for communication and data exchange with the power management module, sensor module, power charging and discharging module, power data analysis module, power data evaluation module and protection circuit module; Power supply data analysis module: used to construct a model with the obtained voltage and current data of power supply charging and discharging and the environmental parameter data of the power supply to obtain a power supply charging and discharging protection evaluation model; Power supply data evaluation module: used to obtain the power supply charge and discharge protection evaluation coefficient by analyzing the power supply charge and discharge protection evaluation model; Protection circuit module: used to detect special conditions such as overcharge, over-discharge, over-temperature and short circuit, and immediately take measures to disconnect power output, limit current and activate alarm when special conditions are detected; The specific constraint formula of the power supply charge and discharge protection evaluation coefficient is: In the formula, It represents the power supply charge and discharge protection evaluation coefficient, which is used to evaluate the comprehensive impact of power supply voltage, current and power supply environment parameters on power supply charge and discharge protection. Indicates the power supply voltage and current evaluation coefficient, which is used to evaluate the impact on power supply charge and discharge protection. It represents the power supply environment parameter evaluation coefficient, which is used to evaluate the impact on power supply charging and discharging protection, and e represents a natural constant; The specific constraint formula of the power supply voltage and current evaluation coefficient is: In the formula, It represents the power supply voltage and current evaluation coefficient, which is used to evaluate the influence of the power supply voltage and current on the power supply charge and discharge protection. A represents the input voltage of the DC power supply, A0 represents the standard input voltage of the DC power supply, B represents the input current of the DC power supply, B0 represents the standard input current of the DC power supply, C represents the output voltage of the DC power supply, C0 represents the standard output voltage of the DC power supply, D represents the output current of the DC power supply, D0 represents the standard output current of the DC power supply, E represents the power capacity of the DC power supply, and e represents the natural constant; The specific constraint formula of the power environment parameter evaluation coefficient is: In the formula, It represents the power supply environment parameter evaluation coefficient, which is used to evaluate the influence of the power supply environment parameters on the power supply charging and discharging protection. F represents the operating temperature of the DC power supply, F0 represents the standard operating temperature of the DC power supply, G represents the operating humidity of the DC power supply, G0 represents the standard operating humidity of the DC power supply, H represents the power frequency of the DC power supply, J represents the electromagnetic interference intensity of the DC power supply, and e represents a natural constant.

2. An intelligent DC power supply charging and discharging protection system as claimed in claim 1, characterized in that: The sensor module includes: a voltage and current unit for power supply charging and discharging and an environmental parameter data acquisition unit for power supply charging and discharging; The voltage and current unit for charging and discharging the power supply is used to measure the charging and discharging voltage and current of the power supply in real time; The environmental parameter data acquisition unit for charging and discharging the power supply is used to monitor the environmental parameters of the power supply in real time, including temperature-related data, humidity-related data and electromagnetic interference-related data.

3. The intelligent DC power supply charging and discharging protection system as claimed in claim 1, characterized in that: The specific control process of controlling the charging and discharging process of the DC power supply is as follows: According to the battery status and load requirements, the charging power and voltage are adjusted through the power charging and discharging module. After detecting the type and size of the load connected to the power supply, the appropriate voltage and current are provided to the power supply. By adjusting the power supply output, the discharge current is controlled.

4. The intelligent DC power supply charging and discharging protection system as claimed in claim 1, characterized in that: The specific process of communication and data exchange is as follows: The power supply voltage and current data and power supply environment parameter data obtained in the sensor module are communicated and exchanged with the power supply charging and discharging module, the power supply data analysis module, the power supply data evaluation module and the protection circuit module through the communication interface module.

5. The intelligent DC power supply charging and discharging protection system as claimed in claim 1, characterized in that: The specific construction process of constructing the obtained voltage and current data of power supply charging and discharging and the environmental parameter data of the power supply into a model: The collected power supply charging and discharging voltage and current data and the power supply environmental parameter data are filtered, denoised and normalized to obtain preprocessed power supply charging and discharging voltage and current data and preprocessed power supply environmental parameter data, improve data quality, extract features from the preprocessed power supply charging and discharging voltage and current data and the preprocessed power supply environmental parameter data, and build a power supply charging and discharging protection evaluation model based on the extracted feature data.

6. The intelligent DC power supply charging and discharging protection system as claimed in claim 1, characterized in that: The specific analysis process of analyzing the power supply charge and discharge protection evaluation model is as follows: The data collected by the sensor module is divided into a training set, a validation set and a test set. The training set is used to train the power supply charge and discharge protection evaluation model. The accuracy and stability of the power supply charge and discharge protection evaluation model are corrected by adjusting the parameters and structure of the power supply charge and discharge protection evaluation model to obtain the power supply charge and discharge protection evaluation coefficient. The trained power supply charge and discharge protection evaluation model is evaluated using the validation set and the test set to evaluate the generalization ability of the power supply charge and discharge protection evaluation model. The training effect of the power supply charge and discharge protection evaluation model is judged according to the generalization ability of the power supply charge and discharge protection evaluation model.

7. The intelligent DC power supply charging and discharging protection system as claimed in claim 1, characterized in that: The specific detection process of immediately taking measures to disconnect the power output, limit the current and activate the alarm when a special situation is detected: The sensor module monitors the output current, power supply output voltage and environmental parameters of the power supply in real time, and sets corresponding protection thresholds. When an abnormal signal is detected and the power supply charge and discharge protection evaluation coefficient exceeds the protection threshold, the system immediately disconnects the power supply output, limits the current and activates the alarm to protect the charge and discharge of the power supply. After the protection measures are implemented, the system enters the protection state and waits for the special situation to be resolved. When the special situation is resolved, the system restores the power output and restarts.

8. The intelligent DC power supply charging and discharging protection system as claimed in claim 5, characterized in that: The specific construction process of constructing the power supply charging and discharging protection evaluation model based on the extracted characteristic data is as follows: Features are extracted from the power supply voltage and current data to obtain power supply voltage and current feature data. Features are extracted from the power supply environment parameter data to obtain power supply environment parameter feature data. A power supply voltage and current evaluation model is constructed based on the power supply voltage and current feature data and the machine learning algorithm. A power supply environment parameter evaluation model is constructed based on the power supply environment parameter data and a rule-based method. The power supply charging and discharging protection evaluation model is obtained through a comprehensive evaluation of the power supply voltage and current evaluation model and the power supply environment parameter evaluation model.

9. The intelligent DC power supply charging and discharging protection system as claimed in claim 7, characterized in that: The specific method for protecting the charging and discharging of the power supply is: Monitor the battery voltage, current and environmental parameters in real time, control the charge and discharge of the power supply, adjust the discharge current and discharge voltage, and set the corresponding protection threshold. When an abnormal signal is detected and the power supply charge and discharge protection evaluation coefficient exceeds the protection threshold, the system immediately takes measures such as disconnecting the power supply output, limiting the current and activating the alarm to protect the charge and discharge of the power supply. Through the communication interface module, the system communicates with external devices to monitor the power supply status and execute power supply charge and discharge protection measures.

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