Intermittent lithium battery charging control method

Abstract

The invention discloses an intermittent lithium battery charging control method, which belongs to the technical field of hydropower station communication system power supply emergency supply, and comprises the steps of power output monitoring, battery state monitoring, temperature monitoring, fault alarm, data acquisition, data management and display, device self-inspection, intelligent charging, intelligent control, safety protection and alarm reminding. The power output monitor comprehensively monitors the charging and discharging states of the lithium battery pack. When the communication power supply device in the hydropower station communication system breaks down or is abnormal, the communication emergency power supply device is used as a standby power supply, and safety factors in the operation process of the communication system power supply device are fully considered; comprising but not limited to the following protection functions: over-temperature protection, over-current protection, short-circuit protection, overcharge protection, over-discharge protection and leakage protection, and provides power support for a communication load, so that power supply is quickly recovered, and continuous and stable operation of a communication system is ensured.

Description

Technical Field

[0001] The present application relates to the technical field of emergency power supply for hydropower station communication systems, and more specifically, to an intermittent lithium battery charging control method. Background Art

[0002] The communication system plays a vital role in the operation of the hydropower station. The communication system can collect the operating data of various equipment in the hydropower station in real time, including the status parameters of key equipment such as turbines, generators, transformers, etc. These data are crucial for evaluating the health of equipment, predicting potential failures, and optimizing operation strategies.

[0003] The application scenarios of backup power supply are mainly concentrated in when the power supply device of the communication system fails or is abnormal. In order to ensure the continuous operation of the communication system, the communication emergency power supply device is used as a backup power supply to provide power support for the communication load, thereby quickly restoring power supply.

[0004] However, although it is simple to charge the power supply device in the hydropower station communication system through the traditional constant current or constant voltage charging method, the traditional constant current or constant voltage charging method has limitations in charging efficiency and battery life. The charging speed is faster in the constant current stage, but polarization is prone to occur when the battery is close to full charge, which affects the charging efficiency; the charging speed is slower in the constant voltage stage, and the battery is easily damaged by overcharging, which will directly affect the stability of the power supply of the hydropower station communication system, increase the risk of failure of the communication system, and may cause the data being processed to be lost or damaged, affecting the safety and stability of the hydropower station operation.

[0005] In view of this, we propose an intermittent lithium battery charging control method. Summary of the invention

[0006] Technical problem to be solved: The purpose of this application is to provide an intermittent lithium battery charging control method to solve the technical problems raised in the above background technology.

[0007] Technical solution: The technical solution of this application provides an intermittent lithium battery charging control method, including: a power output monitoring module, a battery status monitoring module, a temperature monitoring module, a fault alarm module, a data acquisition module, a data management and display module, a device self-check module, an intelligent charging module, an intelligent control module, a safety protection module, and an alarm reminder module;

[0008] The power output monitoring module is used to monitor the charge and discharge status of the lithium battery pack, which includes the remaining power, charge and discharge rate, battery temperature, and health status;

[0009] The battery status monitoring module is used to monitor the temperature change of the internal environment of the battery pack in real time;

[0010] The fault alarm module is used to detect whether the power supply device or related components have a fault or abnormality, and to issue an alarm when a fault or abnormality occurs;

[0011] The data acquisition module is used to automatically acquire operation data generated during the operation of the power supply device, and the operation data includes power output data, battery status data, and temperature data;

[0012] The data management and display module is used to establish a data management system, store, process and analyze the collected data, and display the operating status, historical data and trend analysis of the power supply device.

[0013] As an optional solution of the technical solution of this application document, the data acquisition module establishes an acquisition channel through the IPM-DM communication protocol, sets corresponding parameters and acquisition channels, and completes data acquisition of the charging module, inverter and battery management module.

[0014] As an optional solution of the technical solution of this application document, the data management and display module stores, processes and analyzes the collected data, including a data storage module;

[0015] The data storage module comprises:

[0016] Real-time database: All data used in data management are created in the real-time database. Through the real-time database, the collected data content can be stored in the memory of the local monitoring screen;

[0017] Local storage: The data stored in the real-time database will be saved to the local storage using the SaveSingleDataInit method. Alarm records will be automatically written to the local storage for subsequent analysis and diagnosis.

[0018] Data visualization module: used to display real-time power output, battery status, and temperature data;

[0019] Status monitoring module: used to store the collected data in local storage, and then display the power data in the corresponding display boxes.

[0020] As an optional solution to the technical solution of the present application document, after the monitoring receives the self-test instruction, the device self-test module checks whether there is an alarm at present. If there is no alarm, it sends instructions to the lower computer and sends control instructions to some slave functions. If the lower computer responds normally, the device is considered to be normal.

[0021] As an optional solution of the technical solution of this application document, the intelligent charging module realizes charging through an intelligent algorithm;

[0022] The intelligent algorithm intelligently adjusts the parameters of charging current and voltage according to the real-time status of the battery, charging requirements and environment.

[0023] As an optional solution of the technical solution of this application document, the intelligent charging module includes:

[0024] S1: When the battery pack voltage is lower than 48V at the initial power-on, it will enter the pre-charging stage. When entering the initialization of the pre-charging stage, the charger current will be limited to 0.1C for charging. When the battery pack voltage reaches 48V, the pre-charging is completed and the charging enters the steady current equalization stage.

[0025] S2: When the program enters the steady-current equalization charging initialization, the charging current will stabilize at the set value, and the charging voltage will gradually increase with the collected battery pack voltage, keeping the charging voltage always higher than the battery pack voltage until the charging voltage reaches 58.4V;

[0026] S3: When the charging voltage reaches 58.4V, the program enters the voltage stabilization and equalization charging stage. The charging voltage will be set at 58.4V, and the charging current will be gradually reduced until the charging is completed.

[0027] S4: When charging is completed and the battery is left standing, the program will record the current time. When the battery is left standing for a certain period of time or the battery voltage is too low, it will automatically switch to equalizing charging and perform the above charging process again.

[0028] As an optional solution of the technical solution of this application document, when the intelligent charging module is working, the charging state is monitored;

[0029] The charging status monitoring module is used to collect data related to the battery during the normal charging process, store the data locally through a real-time database, and display the charging-related data on the monitoring interface;

[0030] The charging-related data includes battery voltage, charging time and battery temperature;

[0031] The smart charging module includes alarm function optimization, which includes customized alarm and alarm log components;

[0032] The customized alarm provides alarm classification settings and alarm on / off functions according to user needs to meet alarm needs in different scenarios. The program will classify alarms into different alarm groups according to the user's alarm classification settings. When an alarm occurs, the program will execute the corresponding alarm content according to the alarm group to which the current alarm belongs;

[0033] The alarm log component completes the alarm log setting by placing the alarm log suite in the alarm information interface and binding the relevant alarm group.

[0034] As an optional solution of the technical solution of this application document, the intelligent control module includes intelligent diagnosis, intelligent optimization and user interface and interaction;

[0035] The intelligent diagnosis is used to collect battery information and analyze the current status of the battery;

[0036] The intelligent optimization intelligently optimizes the charging strategy according to the current state of the battery to improve the charging efficiency. During charging, the program will dynamically adjust the voltage and current limiting parameters of the charger according to the battery data collected in real time, so as to complete the charging process with maximum efficiency.

[0037] The user interface and interaction are to facilitate the user to perform charging operations and controls, and the logic of the interface design is based on the logic that the interface level does not exceed 3 layers, dividing the interface into top layer, middle layer and bottom layer;

[0038] 1) Top layer: main interface;

[0039] This interface is the first impression when entering the monitoring screen. When making it, it is ensured that the core functions and navigation structure of the application are clearly displayed. Intuitive patterns and short text labels are used to ensure the display of the main functional areas. When designing, the main interface shows the entrance to quickly browse the core data;

[0040] 2) Middle layer: hierarchical sub-interface;

[0041] Each hierarchical interface is a level for realizing the specific functions. When designing, complex information is grouped in order and presented in the form of lists, curves, and card panels to display data intuitively.

[0042] 3) Bottom layer: detailed interface;

[0043] When making a program, the third-level interface is used to solve the problem of excessive amount of individual data, and is used to facilitate the display of detailed and specific data. However, even in the lowest-level interface, the information is kept simple during production to avoid maintaining redundant and irrelevant elements that interfere with the vision.

[0044] As an optional solution of the technical solution of this application document, the safety protection includes over-current protection, over-voltage protection, and over-temperature protection;

[0045] The overcurrent protection process includes:

[0046] S1: When the battery pack current exceeds the alarm threshold, the charging protection will be triggered at the same time as the monitored overcurrent alarm is triggered;

[0047] S2: After the charging protection is triggered, the current charging state will be stopped and the charger will be current limited;

[0048] S3: 30 minutes after the over-current alarm is reset, or manually click Resume to release the charging protection after the over-current alarm is reset;

[0049] The overvoltage protection includes: overcharge protection, over-discharge protection, short circuit protection, early warning, and alarm;

[0050] The overcharge protection, according to the collected BMS information, when the battery capacity is about to be fully charged and the current is still the equalization current, the monitoring will send a command to the BMS to turn off the charging MOS, thereby disconnecting the charging circuit to protect the battery;

[0051] Over-discharge protection: The program collects information from the BMS. When discharging, if the battery capacity is lower than the set threshold, the monitoring will send a command to the BMS to turn off the discharge MOS, thereby disconnecting the discharge circuit to protect the battery.

[0052] The short circuit protection is implemented by the BMS module;

[0053] The early warning is monitored in real time by the background of the early warning program. When the real-time value of the power data is higher than the early warning threshold, the monitoring will issue an audible and visual alarm for the early warning;

[0054] The execution logic of the early warning program is as follows:

[0055] 1) When monitoring and collecting real-time power data, the real-time value is higher than the warning threshold

[0056] 2) The warning flag of the corresponding power data is set to 1;

[0057] 3) The alarm light element on the trigger interface flashes, the monitoring buzzer sounds, and the alarm log is recorded;

[0058] The alarm is used for battery-related alarms such as power alarm, equipment failure alarm, inverter and charger-related abnormal alarms. When a real-time monitoring value exceeds a preset alarm threshold, the monitoring system will immediately trigger an alarm mechanism;

[0059] The alarm process includes the following steps:

[0060] 1) When monitoring and collecting real-time power data, the real-time value is higher than the alarm threshold;

[0061] 2) The warning flag of the corresponding power data is set to 1;

[0062] 3) The trigger interface alarm light element flashes, the monitoring buzzer sounds, and the alarm log is recorded.

[0063] Beneficial effects: One or more technical solutions provided in the technical solution of the present application have at least the following technical effects or advantages: When a failure or abnormality occurs in the power supply device of the communication system of the hydropower station, the present application can use the communication emergency power supply device as a backup power supply, and fully consider the safety factors during the operation of the power supply device of the communication system, including but not limited to the following protection functions: over-temperature protection, over-current protection, short-circuit protection, over-charge protection, over-discharge protection, leakage protection, to provide power support for the communication load, thereby quickly restoring power supply, thereby ensuring the continuous and stable operation of the communication system. BRIEF DESCRIPTION OF THE DRAWINGS

[0064] Figure 1 This is a flowchart of the charging process in this application.

[0065] Figure 2 This is the interface classification diagram for the user interface and interactive interface in this application.

[0066] Figure 3 This is a flow chart of the protection mechanism in this application.

[0067] Figure 4 This is a flow chart of the early warning mechanism in this application.

[0068] Figure 5 This is a flowchart of the alarm mechanism in this application.

[0069] Figure 6 This is the hierarchical alarm flow chart in this application.

[0070] Figure 7 This is the alarm setting interface for this application.

[0071] Figure 8 This is the monitoring alarm log interface in this application. DETAILED DESCRIPTION

[0072] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0073] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0074] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or a connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0075] Reference Figures 1 to 3 , the embodiment of the present application provides an intermittent lithium battery charging control method, including power output monitoring, battery status monitoring, temperature monitoring, fault alarm, data collection, data management and display, device self-checking, intelligent charging, intelligent control, safety protection, and alarm reminder;

[0076] Power output monitoring: Real-time monitoring of the power output of the power supply device, including key indicators such as voltage and current, to ensure that communication equipment can obtain a stable and compliant power supply and avoid equipment failures caused by power fluctuations.

[0077] Battery status monitoring: Comprehensively monitor the charge and discharge status of lithium battery packs, including key parameters such as remaining power, charge and discharge rate, battery temperature, and health status (such as SOH, SOC), providing a basis for timely charging, battery replacement, or maintenance measures.

[0078] Temperature monitoring: Integrated temperature sensor monitors the temperature changes inside the battery pack in real time to ensure that the equipment operates within an appropriate temperature range and prevent performance degradation or safety accidents caused by overheating.

[0079] Fault alarm: An intelligent fault detection system is designed. Once a fault or abnormal condition (such as battery short circuit, overcharge, over-discharge, overtemperature, etc.) is detected in the power supply device or related components, the alarm function is triggered immediately, and the user is reminded to deal with it in time through sound and light alarms, display prompts or sending remote alarm information.

[0080] Data collection: Automatically collect various data generated during the operation of the power supply device, including but not limited to power output data, battery status data, temperature data, etc., to provide a basis for data management and display.

[0081] Data management and display: Establish a data management system to store, process and analyze the collected data, and intuitively display the operating status, historical data, trend analysis, etc. of the power supply device through the human-computer interaction interface to facilitate user monitoring and management.

[0082] Device self-check: When the monitoring module receives the self-check command, it will first quickly evaluate the current system status to confirm whether there are any unresolved alarm information. If the system is in a healthy state without alarms, the monitoring module will automatically send a series of control commands to the lower computer to test the functional status of some key slaves. If the lower computer can accurately reply to the confirmation information, it is considered that the relevant functional modules of the device are operating normally and the self-check process is successfully completed, indicating that the device is in good working condition.

[0083] Intelligent charging: Automatically adjust the charging strategy according to the real-time status of the battery pack (such as power, temperature, etc.), realize intelligent fast charging, slow charging, balanced charging and other functions, extend the battery life and improve charging efficiency.

[0084] Intelligent control: Integrates intelligent control algorithms to automatically adjust the working mode according to user needs, power supply device status and external environment changes to achieve intelligent management and control of equipment.

[0085] Safety protection: Multiple safety protection measures (such as over-current protection, short-circuit protection, over-temperature protection, etc.) are adopted to ensure that the power supply device can operate safely and stably under various working conditions. At the same time, high-quality materials and components are selected to improve the overall reliability of the equipment.

[0086] Alarm function optimization: supports users to customize alarm thresholds and alarm methods to meet the needs of different application scenarios.

[0087] Data collection

[0088] Through the IPM-DM built-in function kit, according to the slave device communication protocol, establish the collection channel, set the corresponding parameters and collection channel, and complete the data collection of the charging module, inverter and battery management module.

[0089] Data management and presentation

[0090] Data storage: The monitoring screen's built-in function kit can be used to store the collected and processed data locally. This enables the following functions:

[0091] 1) Real-time database: All variables used in this project are stored in the real-time database that comes with the monitoring screen kit. All data objects are created in the real-time database. Through the real-time database, the collected data content can be stored in the memory of the local monitoring screen for subsequent calls.

[0092] 2) Local storage: The local monitoring device is equipped with a large-capacity storage device. The data that needs to be stored for a long time in the program, such as curve graphs and set values, will use the SaveSingleDataInit method to save the data to the local storage. The alarm records will be automatically written to the local storage for subsequent analysis and diagnosis.

[0093] 3) Data visualization: Equipped with a high-definition display screen, the interface displays real-time power output, battery status, temperature and other key information data. Some key data use the curve graph element of the monitoring screen to intuitively display the real-time battery pack voltage and current data and other slave data as real-time data curves and historical record curves respectively.

[0094] 4) Status monitoring: Based on the built-in collection and storage functions of the monitoring screen, the collected data is stored in the memory, and then the power data is bound to the corresponding display frame through the built-in functions and display kit of the monitoring screen.

[0095] Device self-test

[0096] Device self-check: After receiving the self-check command, the monitor will first check whether there is an alarm. If there is no alarm, it will send instructions to the lower computer and control instructions to some slave functions. If the lower computer responds normally, the device is considered normal.

[0097] Smart Charging

[0098] Intelligent algorithm: intelligently adjust charging current, voltage and other parameters according to the real-time status of the battery, charging requirements and environment.

[0099] Smart charging enables:

[0100] 1) Efficient charging experience: By optimizing the charging process and strategy, users can achieve higher charging efficiency and quality in a shorter time, thereby improving the overall user experience.

[0101] 2) Automatic maintenance function: The automatic equalization charging mechanism saves users from tedious manual maintenance operations, making users more worry-free and labor-saving. At the same time, this mechanism also helps to maintain the performance and life of the battery, reducing users' worries.

[0102] Charging is divided into 3 stages:

[0103] 1) When the battery pack voltage is lower than 48V at the initial power-on, it will enter the pre-charging stage. When entering the initialization of the pre-charging stage, the charger current will be limited to 0.1C for charging. When the battery pack voltage reaches 48V, the pre-charging is completed and the charging enters the steady current equalization stage.

[0104] 2) When the program enters the steady-current equalization charging initialization, the charging current will stabilize at the set value, and the charging voltage will gradually increase with the collected battery pack voltage, keeping the charging voltage always higher than the battery pack voltage until the charging voltage reaches 58.4V.

[0105] 3) When the charging voltage reaches 58.4V, the program enters the voltage stabilization and equalization charging stage. The charging voltage will be set at 58.4V and the charging current will be gradually reduced until charging is completed.

[0106] 4) After charging is completed and the battery is left standing, the program will record the current time. When the battery is left standing for a certain period of time or the battery voltage is too low, the battery will automatically switch to equalized charging and repeat the above charging process. The program flowchart is as follows: Figure 1 shown.

[0107] Charging status monitoring: During normal charging, the monitoring screen's built-in acquisition kit collects data related to the charging module and battery to the monitoring screen, and stores the data locally through the real-time database. The monitoring screen obtains charging-related data from the real-time database and displays the charging-related data on the monitoring interface, including battery voltage, charging time, battery temperature, etc., for easy viewing by personnel.

[0108] Intelligent Control

[0109] Intelligent diagnosis: BMS equipment can collect battery information and analyze the current condition of the battery. It can evaluate the battery health through intelligent diagnosis and make corresponding replacement suggestions for the battery based on the battery health value through monitoring.

[0110] Intelligent optimization: According to the current state of the battery, the charging strategy is intelligently optimized to improve the charging efficiency. During charging, the program will dynamically adjust the voltage and current limiting parameters of the charger based on the real-time collected battery data to complete the charging process with maximum efficiency.

[0111] User interface and interaction: Design an intuitive user interface and friendly interaction mode to facilitate users to operate and control charging. The logic of interface design is based on the logic that the interface level does not exceed 3 layers, and the interface is divided into top layer, middle layer and bottom layer. The interface level diagram is as follows: Figure 2 shown.

[0112] 1) Top level: main interface

[0113] This interface is the first impression when entering the monitoring screen. When making it, it is ensured that the core functions and navigation structure of the application are clearly displayed. In addition, intuitive patterns and short text labels are used to ensure the display of the main functional areas. When designing, the main interface displays the entrance to quickly browse the core data.

[0114] A global navigation menu is provided during design, allowing users to quickly locate the required functional modules.

[0115] 2) Middle layer: hierarchical sub-interface

[0116] Each hierarchical interface is a level that realizes the concrete functions. When designing, complex information is grouped in order and presented in the form of lists, curves, card panels, etc. to display data intuitively.

[0117] 3) Bottom layer: Detailed interface

[0118] When making a program, the third-level interface is used to solve the problem of excessive amount of individual data, and is used to facilitate the display of detailed and specific data. However, even in the lowest-level interface, the information is kept simple during production to avoid maintaining redundant and irrelevant elements that interfere with the vision.

[0119] Command response: The physical interfaces of monitoring include serial port and network port. In this project, based on these two physical serial ports, in order to meet the needs of various situations, the monitoring's own collection and reporting kit is used to reserve the Modbus-RTU communication protocol through the serial port to the background and the Modbus-TCP communication protocol through the network port to the background, which is convenient for establishing communication with the background;

[0120] Under the premise of communication, monitoring can quickly respond to instructions obtained from the background through its own collection and reporting suite, and assign the instruction value to the corresponding execution mark. The monitoring background program strategy recognizes the change of the execution mark and executes the command according to the instruction content. In addition, local monitoring can also report local monitoring content to the background according to the communication protocol and background instructions, which is convenient for background viewing.

[0121] Security protection

[0122] Multiple safety protections: Designed with over-current protection, over-voltage protection, over-temperature protection, and other multiple safety protection mechanisms.

[0123] Overcurrent protection process:

[0124] 1) When the battery pack current exceeds the alarm threshold, the charging protection will be triggered at the same time as the monitored overcurrent alarm is triggered.

[0125] 2) Once the charging protection is triggered, the current charging state will be stopped and the charger will be current limited.

[0126] 3) Thirty minutes after the over-current alarm is reset, or manually click Resume to release the charging protection.

[0127] Overvoltage protection and overtemperature protection are consistent with the above execution process. The protection mechanism flow chart is as follows: Figure 3 shown.

[0128] Overcharge protection: Based on the collected BMS information, when the battery capacity is about to be fully charged and the current is still equalizing, the monitoring will send a command to the BMS to shut down the charging MOS, thereby disconnecting the charging circuit to protect the battery.

[0129] Over-discharge protection: Based on the collected BMS information, when discharging, if the battery capacity is lower than the set threshold, the monitoring will send instructions to the BMS to turn off the discharge MOS, thereby disconnecting the discharge circuit to protect the battery.

[0130] Short circuit protection: implemented by the BMS module, the BMS can automatically detect short circuit and turn on protection.

[0131] Early warning: Through real-time monitoring in the background of the program, when the real-time value of the power data is higher than the early warning threshold, the monitoring will issue an audible and visual alarm for the early warning.

[0132] The program execution logic is as follows:

[0133] 1) When monitoring and collecting real-time power data, the real-time value is higher than the warning threshold;

[0134] 2) The warning flag of the corresponding power data is set to 1;

[0135] 3) The alarm light element on the trigger interface flashes, the monitoring buzzer sounds, and the alarm log is recorded;

[0136] The flowchart of the above early warning mechanism is as follows Figure 4 shown.

[0137] Alarm function:

[0138] Alarms include alarms for abnormal communication of subordinate devices, battery-related alarms such as power alarms, equipment failure alarms, abnormal alarms related to inverters and chargers, etc. When the real-time monitoring value of a system or device exceeds the preset alarm threshold, the monitoring system will immediately trigger the alarm mechanism.

[0139] The program execution logic is as follows:

[0140] 1) When monitoring and collecting real-time power data, the real-time value is higher than the alarm threshold;

[0141] 2) The warning flag of the corresponding power data is set to 1;

[0142] 3) The trigger interface alarm light element flashes, the monitoring buzzer sounds, and the alarm log is recorded; the flowchart of the above alarm mechanism is as follows Figure 5 shown.

[0143] The program supports manual exit from the alarm. When the exit alarm operation is performed, the monitoring receives the command and the execution program of the sound and light alarm will be suspended, thereby turning off the sound and light alarm, but the alarm information will not be eliminated.

[0144] Recording and output of alarm signals:

[0145] When the real-time value of the collected power data exceeds the corresponding alarm threshold, the system will immediately trigger the alarm process. This process includes the following steps:

[0146] Confirm alarm conditions: First, the system will confirm that the real-time value of power data has exceeded the alarm threshold to avoid false alarms caused by data fluctuations or errors.

[0147] Record alarm information: After confirming the alarm conditions, the system will record the time when the alarm occurred, the parameters involved, and other information.

[0148] Issue sound and light alarms: In order to quickly attract the operator's attention, the system will send out strong audio-visual signals through sound and light alarm devices (such as alarm lights, buzzers, etc.).

[0149] Confirm and exit the alarm: After confirming the alarm information, the on-site personnel can choose to exit the alarm in the control setting interface. After exiting, the monitored sound and light alarm will end, but the alarm information will still be retained.

[0150] Through the above process, the system can effectively monitor key parameters in real time and issue warnings in time when abnormal situations are found, thereby ensuring the stable operation and safety of the system or equipment.

[0151] Alarm function optimization

[0152] Customized alarm: According to user needs, the program provides alarm classification settings and alarm on / off functions to meet the alarm needs in different scenarios. The program will set the alarm classification according to the user's settings (the flowchart of the graded alarm is as follows Figure 6 As shown in the figure), the alarms are divided into different alarm groups. When an alarm occurs, the program will execute the corresponding alarm content according to the alarm group to which the current alarm belongs.

[0153] Alarm log component: The monitoring screen provides alarm log related kits, and the program provides alarm log function. In the alarm information interface of the program, place the alarm log kit and bind the relevant alarm group to complete the alarm log setting. The alarm setting interface is as follows: Figure 7 As shown, the monitoring alarm log interface is as follows Figure 8 shown.

[0154] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A method for controlling intermittent lithium battery charging, characterized in that: include: Power output monitoring module, battery status monitoring module, temperature monitoring module, fault alarm module, data acquisition module, data management and display module, device self-check module, intelligent charging module, intelligent control module, safety protection module, alarm reminder module; The power output monitoring module is used to monitor the charge and discharge status of the lithium battery pack, which includes the remaining power, charge and discharge rate, battery temperature, and health status; The battery status monitoring module is used to monitor the temperature change of the internal environment of the battery pack in real time; The fault alarm module is used to detect whether the power supply device or related components have a fault or abnormality, and to issue an alarm when a fault or abnormality occurs; The data acquisition module is used to automatically acquire operation data generated during the operation of the power supply device, and the operation data includes power output data, battery status data, and temperature data; The data management and display module is used to establish a data management system, store, process and analyze the collected data, and display the operating status, historical data and trend analysis of the power supply device.

2. The intermittent lithium battery charging control method according to claim 1, characterized in that: The data acquisition module establishes an acquisition channel through the IPM-DM communication protocol, sets corresponding parameters and acquisition channels, and completes data acquisition of the charging module, inverter and battery management module.

3. The intermittent lithium battery charging control method according to claim 2, characterized in that: The data management and display module stores, processes and analyzes the collected data, including a data storage module; The data storage module comprises: Real-time database: All data used in data management are created in the real-time database. Through the real-time database, the collected data content can be stored in the memory of the local monitoring screen; Local storage: The data stored in the real-time database will be saved to the local storage using the SaveSingleDataInit method. Alarm records will be automatically written to the local storage for subsequent analysis and diagnosis. Data visualization module: used to display real-time power output, battery status, and temperature data; Status monitoring module: used to store the collected data in local storage, and then display the power data in the corresponding display boxes.

4. The intermittent lithium battery charging control method according to claim 3, characterized in that: After receiving the self-check instruction, the device self-check module checks whether there is an alarm at present. If there is no alarm, it sends instructions to the lower computer and sends control instructions to some slave functions. If the lower computer responds normally, the device is considered to be normal.

5. The intermittent lithium battery charging control method according to claim 1, characterized in that: The intelligent charging module realizes charging through an intelligent algorithm; The intelligent algorithm intelligently adjusts the parameters of charging current and voltage according to the real-time status of the battery, charging requirements and environment.

6. The intermittent lithium battery charging control method according to claim 1, characterized in that: The intelligent charging module comprises: S1: When the battery pack voltage is lower than 48V at the initial power-on, it will enter the pre-charging stage. When entering the initialization of the pre-charging stage, the charger current will be limited to 0.1C for charging. When the battery pack voltage reaches 48V, the pre-charging is completed and the charging enters the steady current equalization stage. S2: When the program enters the steady-current equalization charging initialization, the charging current will stabilize at the set value, and the charging voltage will gradually increase with the collected battery pack voltage, keeping the charging voltage always higher than the battery pack voltage until the charging voltage reaches 58.4V; S3: When the charging voltage reaches 58.4V, the program enters the voltage stabilization and equalization charging stage. The charging voltage will be set at 58.4V, and the charging current will be gradually reduced until the charging is completed. S4: When charging is completed and the battery is left standing, the program will record the current time. When the battery is left standing for a certain period of time or the battery voltage is too low, it will automatically switch to equalizing charging and perform the above charging process again.

7. The intermittent lithium battery charging control method according to claim 6, characterized in that: When the intelligent charging module is working, the charging status is monitored; The charging status monitoring module is used to collect data related to the battery during the normal charging process, store the data locally through a real-time database, and display the charging-related data on the monitoring interface; The charging-related data includes battery voltage, charging time and battery temperature; The smart charging module includes alarm function optimization, which includes customized alarm and alarm log components; The customized alarm provides alarm classification settings and alarm on / off functions according to user needs to meet alarm needs in different scenarios. The program will classify alarms into different alarm groups according to the user's alarm classification settings. When an alarm occurs, the program will execute the corresponding alarm content according to the alarm group to which the current alarm belongs; The alarm log component completes the alarm log setting by placing the alarm log suite in the alarm information interface and binding the relevant alarm group.

8. The intermittent lithium battery charging control method according to claim 7, characterized in that: The intelligent control module includes intelligent diagnosis, intelligent optimization, and user interface and interaction; The intelligent diagnosis is used to collect battery information and analyze the current status of the battery; The intelligent optimization intelligently optimizes the charging strategy according to the current state of the battery to improve the charging efficiency. During charging, the program will dynamically adjust the voltage and current limiting parameters of the charger according to the battery data collected in real time, so as to complete the charging process with maximum efficiency. The user interface and interaction are to facilitate the user to perform charging operations and controls, and the logic of the interface design is based on the logic that the interface level does not exceed 3 layers, dividing the interface into top layer, middle layer and bottom layer; 1) Top layer: main interface; This interface is the first impression when entering the monitoring screen. When making it, it is ensured that the core functions and navigation structure of the application are clearly displayed. Intuitive patterns and short text labels are used to ensure the display of the main functional areas. When designing, the main interface shows the entrance to quickly browse the core data; 2) Middle layer: hierarchical sub-interface; Each hierarchical interface is a level for realizing the specific functions. When designing, complex information is grouped in order and presented in the form of lists, curves, and card panels to display data intuitively. 3) Bottom layer: detailed interface; When making a program, the third-level interface is used to solve the problem of excessive amount of individual data, and is used to facilitate the display of detailed and specific data. However, even in the lowest-level interface, the information is kept simple during production to avoid maintaining redundant and irrelevant elements that interfere with the vision.

9. The intermittent lithium battery charging control method according to claim 7, characterized in that: The safety protection includes over-current protection, over-voltage protection and over-temperature protection; The overcurrent protection process includes: S1: When the battery pack current exceeds the alarm threshold, the charging protection will be triggered at the same time as the monitored overcurrent alarm is triggered; S2: After the charging protection is triggered, the current charging state will be stopped and the charger will be current limited; S3: 30 minutes after the over-current alarm is reset, or manually click Resume to release the charging protection after the over-current alarm is reset; The overvoltage protection includes: overcharge protection, over-discharge protection, short circuit protection, early warning, and alarm; The overcharge protection, according to the collected BMS information, when the battery capacity is about to be fully charged and the current is still the equalization current, the monitoring will send a command to the BMS to turn off the charging MOS, thereby disconnecting the charging circuit to protect the battery; Over-discharge protection: The program collects information from the BMS. When discharging, if the battery capacity is lower than the set threshold, the monitoring will send a command to the BMS to turn off the discharge MOS, thereby disconnecting the discharge circuit to protect the battery. The short circuit protection is implemented by the BMS module; The warning is monitored in real time by the background of the warning program. When the real-time value of the power data is higher than the warning threshold, the monitoring will issue an audible and visual alarm for the warning; The execution logic of the early warning program is as follows: 1) When monitoring and collecting real-time power data, the real-time value is higher than the warning threshold 2) The warning flag of the corresponding power data is set to 1; 3) The alarm light element on the trigger interface flashes, the monitoring buzzer sounds, and the alarm log is recorded; The alarm is used for battery-related alarms such as power alarm, equipment failure alarm, inverter and charger-related abnormal alarms. When a real-time monitoring value exceeds a preset alarm threshold, the monitoring system will immediately trigger an alarm mechanism; The alarm process includes the following steps: 1) When monitoring and collecting real-time power data, the real-time value is higher than the alarm threshold; 2) The warning flag of the corresponding power data is set to 1; 3) The trigger interface alarm light element flashes, the monitoring buzzer sounds, and the alarm log is recorded.

Images