Intelligent charging and discharging management system based on lithium battery protection board

Abstract

The invention relates to the technical field of lithium battery protection boards, in particular to an intelligent charging and discharging management system based on a lithium battery protection board, and solves the problems that in the prior art, although important guarantee is provided for safe use of a lithium battery, some defects still exist, the protection board fails, and the lithium battery protection board is prone to damage in the long-term use process. And potential safety hazards such as over-charging, over-discharging, short circuit and the like of the battery cannot be effectively prevented. An intelligent charging and discharging management system based on a lithium battery protection board comprises system initialization, real-time battery state monitoring, charging management, discharging management, battery cell balance management, fault diagnosis and early warning, data recording and analysis, and system dormancy and awakening. According to the intelligent charging and discharging management system based on the lithium battery protection board, the service efficiency of the battery is improved, the service life of the battery is prolonged, through accurate electric quantity monitoring and intelligent charging and discharging management, the system can avoid the phenomena of over-charging, over-discharging and over-current of the battery, and therefore the service life of the battery is effectively prolonged.

Description

Technical Field

[0001] The present invention relates to the technical field of lithium battery protection boards, and in particular to an intelligent charge and discharge management system based on a lithium battery protection board. Background Art

[0002] As the name implies, the lithium battery protection board is an integrated circuit board that protects rechargeable lithium batteries (especially lithium-ion batteries). It is mainly composed of electronic circuits, including control ICs, MOS switches, resistors, capacitors, and auxiliary devices such as NTCs (negative temperature coefficient thermistors), ID memory, etc. The lithium battery protection board can accurately monitor the voltage of the battery cell and the current of the charging and discharging circuits at all times in an environment of -40°C to +85°C, and instantly control the on and off of the current circuit to protect the safety of the battery cell. The main functions of the lithium battery protection board include: Overcharge protection: When the charging voltage exceeds the maximum voltage allowed by the battery (usually 4.2V or 4.3V), the protection board will automatically cut off the charging circuit to prevent the battery from overcharging, thereby avoiding battery damage or safety risks. Over-discharge protection: When the battery voltage drops to a set minimum value (such as 2.3V to 2.5V), the protection board will close the discharge circuit to prevent the battery from over-discharging and extend the battery life. Overcurrent protection: When the battery discharge current exceeds the set maximum value, the protection board will quickly cut off the discharge circuit to prevent the battery from being damaged by high current discharge. Short circuit protection: If the positive and negative poles of the battery are accidentally short-circuited, the protection board will automatically shut down the circuit within a few milliseconds to prevent excessive current from causing battery damage or safety accidents. In addition, some high-end lithium battery protection boards also have special functions such as cell balancing, power metering, and serial communication to improve the overall performance and safety of the battery pack. From a structural point of view, lithium battery protection boards can be classified according to the connection method of the battery pack (series or parallel) and the functional characteristics of the protection board. At the same time, there are many types of protection board materials, such as hard boards (hard boards), soft boards, single-layer boards, multi-layer boards, double-sided boards, etc. These different types of protection boards vary in application scenarios and performance characteristics.

[0003] Although the existing technology provides important protection for the safe use of lithium batteries, there are still some drawbacks, such as protection board failure. During long-term use, the lithium battery protection board may have poor battery contact, protection board failure, etc. Once the protection board fails, it will not be able to effectively prevent safety hazards such as battery overcharging, over-discharging, and short circuit, thereby endangering the safety of the user. The protection board design limitations, the existing lithium battery protection board usually protects based on preset voltage, current and temperature thresholds. However, as the lithium battery is used for a longer time, its performance may gradually decline, such as the full charge voltage decreases. At this time, if the protection board still protects according to the original setting value, it may cause the battery to overcharge or discharge, increase safety risks, and reduce battery life. The protection circuit in the lithium battery protection board will consume a certain amount of energy. of electricity, which may reduce the battery life and charging efficiency. In order to protect the battery from overcharging, over-discharging and other damages, the protection board will adjust and limit the charging current, which may lead to reduced charging efficiency, prolonged charging time, and reduced battery capacity. Installing a protection board will increase the volume and weight of the battery and occupy more space, which may compress the battery capacity to a certain extent and affect the overall performance of the battery. With the continuous development of lithium battery technology, new battery materials, structures and designs are constantly emerging. These new batteries may put forward higher requirements on the performance of the protection board, such as higher accuracy, faster response speed, etc. However, the protection board in the prior art may be difficult to fully adapt to the needs of these new batteries, although the existing lithium battery protection board already has certain intelligent functions. Summary of the invention

[0004] The purpose of the present invention is to provide an intelligent charge and discharge management system based on a lithium battery protection board, which solves the problem that although the prior art provides important guarantees for the safe use of lithium batteries, there are still some drawbacks, such as protection board failure. During long-term use of the lithium battery protection board, poor battery contact and protection board failure may occur. Once the protection board fails, it will be unable to effectively prevent safety hazards such as battery overcharging, over-discharging and short circuit.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] An intelligent charge and discharge management system based on a lithium battery protection board includes an initialization system, real-time monitoring of battery status, charge management, discharge management, cell balancing management, fault diagnosis and early warning, data recording and analysis, and system sleep and wake-up. After the system is powered on, hardware initialization is first performed, including initialization settings of components such as protection board circuits, communication interfaces, and sensors. Voltage and current data of a battery pack are collected in real time through built-in voltage sensors and current sensors in the protection board. When the system detects that the battery needs to be charged, a charging strategy is formulated according to the current status of the battery. When the system detects that the battery needs to be discharged, a discharge strategy is formulated according to the current status of the battery and load requirements. The voltage difference of each cell in the battery pack is regularly detected to determine whether cell balancing is required. The system regularly or in real time diagnoses faults of the battery pack and the protection board to detect whether there are abnormalities or faults. The system records the charge and discharge data, status monitoring data, and fault diagnosis data of the battery pack in real time. When the system is not operated for a long time, it automatically enters sleep mode.

[0007] Preferably, initialize the system, initialize the hardware, work normally, initialize the communication interface, including setting parameters such as communication protocol and baud rate, ensure unimpeded communication with the host computer or user terminal, calibrate key sensors such as voltage sensors and current sensors, ensure the accuracy of collected data, parameter reading and setting: read the basic parameters of the battery pack, including battery type, capacity, rated voltage, etc., these parameters are usually stored in the EEPROM of the battery pack or protection board, set the protection threshold, overcharge protection voltage, over-discharge protection voltage, overcurrent protection current, etc. according to the read battery parameters to ensure that the battery works within a safe range, connection status check, check whether the connection between the battery pack and the protection board is firm, including the positive and negative poles of the battery, temperature sensor and other connection points, detect the connection status of the battery pack through the communication interface or internal circuit to ensure that there is no open circuit or short circuit.

[0008] Preferably, the battery status is monitored in real time, and data is collected by using the built-in voltage sensor and current sensor of the protection board to collect the voltage and current data of the battery pack in real time. These data are the basis for judging the battery status. At the same time, the temperature data of the battery pack is collected to monitor whether the operating temperature of the battery is abnormal. The status calculation calculates the remaining power of the battery based on the collected voltage and current data. Usually, methods such as coulomb counting method or open circuit voltage method are used to evaluate the health of the battery, considering factors such as the number of battery cycles and capacity attenuation, so as to provide a basis for battery maintenance and management. Temperature monitoring monitors the temperature of the battery pack in real time and compares it with the preset safe temperature range. If the temperature exceeds the safe range, the system should issue a warning signal and take corresponding cooling measures, such as starting the fan or reducing the charging current.

[0009] Preferably, charging management, charging strategy formulation, when the system detects that the battery power is lower than the preset charging threshold, a charging strategy is formulated according to the current state of the battery. The charging strategy should include key parameters such as charging mode, charging current, charging voltage, and charging time. Charging process control, controlling the output of the charging circuit to ensure that the charging current and voltage meet the preset charging strategy. During the charging process, the battery voltage, current, temperature and other parameters are monitored in real time, and the charging parameters are dynamically adjusted according to actual conditions. Discharging strategy formulation, when the system detects that the battery needs to be discharged, a discharging strategy is formulated according to the current state of the battery and load requirements. The discharging strategy should include key parameters such as discharge current and discharge time to ensure that the battery is discharged within a safe current range. Discharging process control, controlling the output of the discharge circuit to ensure that the discharge current meets the preset discharge strategy, real-time monitoring of the battery status, voltage, current, and remaining power during the discharge process.

[0010] Preferably, cell balancing management, voltage difference detection, regular detection of the voltage difference of each cell in the battery pack to determine whether cell balancing is required. When the voltage difference exceeds a preset threshold, it indicates that there is an imbalance between the cells and balancing is required. Balancing process control, if cell balancing is required, the system should start the balancing circuit to reduce the voltage difference between the cells by transferring electricity. During the balancing process, the system should monitor the status of the battery pack in real time to ensure that the balancing process is safe and effective. After the balancing is completed, the system should detect the voltage difference of the cells again to confirm the balancing effect. Fault diagnosis and early warning, fault diagnosis, the system should be regular or Perform fault diagnosis on the battery pack and protection board in real time to detect whether there are abnormalities or faults. Fault diagnosis should include hardware faults and software faults. Warning signals are issued. If a fault or abnormality is found, the system should immediately issue a warning signal, such as sound and light alarms, sending text messages or emails, etc. The warning signal should contain key information such as fault type, fault location, and fault time, so that users or maintenance personnel can handle it in time and take protective measures. According to the type and severity of the fault, the system should take corresponding protective measures, such as cutting off the charging and discharging circuits, reducing the output power, etc. The protective measures should ensure the safety of the battery and system, while minimizing the impact on user use.

[0011] Preferably, data recording and analysis, data recording, the system should record the battery pack's charge and discharge data, status monitoring data, fault diagnosis data, etc. in real time. The data record should include key information such as timestamp, data value, data source, etc. for subsequent analysis and processing, data analysis and processing, regularly analyze and process the recorded data, and generate battery pack performance reports and fault analysis reports. The performance report should include indicators such as the remaining battery power, health status, and charge and discharge efficiency, so that users can understand the battery usage. The fault analysis report should include fault type, fault frequency, fault cause and other analysis content, so that users or maintenance personnel can promptly troubleshoot and optimize the system. Strategy optimization, based on the data analysis results, optimize and adjust the charge and discharge management strategy, such as adjusting the charging current, discharge current, and balance. Frequency and other parameters, strategy optimization should be aimed at improving the efficiency and life of the battery pack while ensuring the safety and stability of the system, system sleep and wake-up, sleep mode entry, when the system is not operated for a long time, the system should automatically enter sleep mode, in sleep mode, the system should turn off unnecessary circuits and sensors to reduce energy consumption and extend battery life, wake-up condition detection, the system should monitor the external trigger signal in real time to determine whether the system needs to be woken up, when a valid wake-up signal is detected, the system should immediately wake up from sleep mode and resume normal working state, wake-up process control, during the wake-up process, the system should gradually start the circuit and sensor to ensure that the system smoothly transitions to normal working state, at the same time, the system should check the status of the battery pack and protection board to ensure that the system can work safely and reliably.

[0012] The present invention has at least the following beneficial effects:

[0013] The present invention discloses an intelligent charge and discharge management system based on a lithium battery protection board, which improves the use efficiency and life of the battery. Through accurate power monitoring and intelligent charge and discharge management, the system can avoid overcharging, overdischarging and overcurrent of the battery, thereby effectively extending the service life of the battery. The battery cell balancing management function can reduce the voltage difference between each battery cell in the battery pack, improve the overall performance and consistency of the battery pack, further improve the use efficiency of the battery, and enhance the safety of the system. The system monitors the status of the battery in real time, including key parameters such as voltage, current, and temperature. Once an abnormality or fault is detected, the charge and discharge circuit can be immediately cut off and an alarm can be issued, effectively preventing the occurrence of safety accidents. The fault diagnosis and early warning function can timely discover and handle potential problems in the system, ensure the stable operation of the system and the safety of users, and improve user experience. The system can automatically make adjustments according to the battery status and user needs. Determine and execute appropriate charging and discharging strategies without manual intervention by the user, which improves the convenience of use. Through the data recording and analysis function, the user can understand the battery usage and performance status at any time, provide strong support for battery maintenance and management, and reduce energy consumption and costs. The system sleep and wake-up function can automatically enter sleep mode when the system is not operated, reducing energy consumption, and quickly wake up when the system needs it, which not only ensures the response speed of the system, but also saves energy. By optimizing the charge and discharge management strategy, the system can improve the battery charging efficiency and discharge efficiency, reduce battery loss and replacement costs, and enhance the scalability and flexibility of the system. The system adopts a modular design, and each functional module is relatively independent, which is convenient for system expansion and upgrade. The system supports a variety of communication interfaces and protocols, and can communicate with different types of host computers or user terminals to meet application requirements in different scenarios. DETAILED DESCRIPTION

[0014] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0015] Embodiment 1

[0016] It includes initializing the system, real-time monitoring of battery status, charging management, discharging management, cell balancing management, fault diagnosis and early warning, data recording and analysis, system sleep and wake-up. After the system is powered on, the hardware is initialized first, including the initialization settings of protection board circuits, communication interfaces, sensors and other components. The voltage and current data of the battery pack are collected in real time through the built-in voltage sensor and current sensor of the protection board. When the system detects that the battery needs to be charged, a charging strategy is formulated according to the current status of the battery. When the system detects that the battery needs to be discharged, a discharge strategy is formulated according to the current status of the battery and load requirements. The voltage difference of each cell in the battery pack is regularly detected to determine whether cell balancing is required. The system regularly or in real time diagnoses the battery pack and protection board to detect whether there are abnormalities or faults. The system records the charge and discharge data, status monitoring data, and fault diagnosis data of the battery pack in real time. When the system has no operation for a long time, it automatically enters sleep mode.

[0017] The present invention discloses an intelligent charge and discharge management system based on a lithium battery protection board, which improves the use efficiency and life of the battery. Through accurate power monitoring and intelligent charge and discharge management, the system can avoid overcharging, overdischarging and overcurrent of the battery, thereby effectively extending the service life of the battery. The battery cell balancing management function can reduce the voltage difference between each battery cell in the battery pack, improve the overall performance and consistency of the battery pack, further improve the use efficiency of the battery, and enhance the safety of the system. The system monitors the state of the battery in real time, including key parameters such as voltage, current, and temperature. Once an abnormality or fault is detected, the charge and discharge circuit can be immediately cut off and an alarm can be issued, effectively preventing the occurrence of safety accidents. The fault diagnosis and early warning function can timely discover and handle potential problems in the system, ensure the stable operation of the system and the safety of users, and improve user experience. The system can automatically formulate and execute appropriate charge and discharge strategies according to the battery state and user needs, without the need for manual intervention by the user, thereby improving the convenience of use. Through the data recording and analysis function, the user can understand the use and performance of the battery at any time, providing strong support for the maintenance and management of the battery, and reducing energy consumption and cost.

[0018] Embodiment 2

[0019] Initialize the system, hardware initialization, normal operation, initialize the communication interface, including setting parameters such as communication protocol and baud rate, ensure unimpeded communication with the host computer or user terminal, calibrate key sensors such as voltage sensors and current sensors to ensure the accuracy of collected data, parameter reading and setting: read the basic parameters of the battery pack, including battery type, capacity, rated voltage, etc. These parameters are usually stored in the EEPROM of the battery pack or protection board. According to the read battery parameters, set the protection threshold, overcharge protection voltage, over-discharge protection voltage, overcurrent protection current, etc. to ensure that the battery works within a safe range, connection status check, check whether the connection between the battery pack and the protection board is firm, including the positive and negative poles of the battery, temperature sensor and other connection points, detect the connection status of the battery pack through the communication interface or internal circuit to ensure that there is no open circuit or short circuit.

[0020] Embodiment 3

[0021] Real-time monitoring of battery status, data acquisition, using the built-in voltage sensor and current sensor of the protection board, real-time acquisition of voltage and current data of the battery pack, these data are the basis for judging the battery status, and at the same time, the temperature data of the battery pack is collected to monitor whether the operating temperature of the battery is abnormal, status calculation, according to the collected voltage and current data, calculate the remaining power of the battery, usually using methods such as coulomb counting method or open circuit voltage method to evaluate the health of the battery, considering factors such as the number of battery cycles and capacity attenuation, to provide a basis for battery maintenance and management, temperature monitoring, real-time monitoring of the temperature of the battery pack, and compare it with the preset safety temperature range, the temperature exceeds the safety range, the system should issue a warning signal, and take corresponding cooling measures, start the fan or reduce the charging current.

[0022] Embodiment 4

[0023] Charging management, charging strategy formulation, when the system detects that the battery power is lower than the preset charging threshold, a charging strategy is formulated according to the current state of the battery. The charging strategy should include key parameters such as charging mode, charging current, charging voltage, and charging time. Charging process control, control the output of the charging circuit to ensure that the charging current and voltage meet the preset charging strategy. During the charging process, the battery voltage, current, temperature and other parameters are monitored in real time, and the charging parameters are dynamically adjusted according to actual conditions. Discharging strategy formulation, when the system detects that the battery needs to be discharged, a discharge strategy is formulated according to the current state of the battery and load requirements. The discharge strategy should include key parameters such as discharge current and discharge time to ensure that the battery is discharged within a safe current range. Discharging process control, control the output of the discharge circuit to ensure that the discharge current meets the preset discharge strategy. Real-time monitoring of the battery status, voltage, current, and remaining power during the discharge process.

[0024] Embodiment 5

[0025] Cell balancing management, voltage difference detection, regular detection of the voltage difference of each cell in the battery pack to determine whether cell balancing is required. When the voltage difference exceeds the preset threshold, it indicates that there is an imbalance between the cells and balancing is required. Balancing process control, if cell balancing is required, the system should start the balancing circuit to reduce the voltage difference between the cells by transferring power. During the balancing process, the system should monitor the status of the battery pack in real time to ensure that the balancing process is safe and effective. After the balancing is completed, the system should detect the voltage difference of the cells again to confirm the balancing effect. Fault diagnosis and early warning, fault diagnosis, the system should be regular or real-time Perform fault diagnosis on the battery pack and protection board to detect whether there are any abnormalities or faults. Fault diagnosis should include hardware faults and software faults. Warning signals will be issued. If a fault or abnormality is found, the system should immediately issue a warning signal, such as sound and light alarms, sending text messages or emails, etc. The warning signal should contain key information such as fault type, fault location, and fault time, so that users or maintenance personnel can handle it in time and take protective measures. According to the type and severity of the fault, the system should take corresponding protective measures, such as cutting off the charging and discharging circuits, reducing the output power, etc. The protective measures should ensure the safety of the battery and system, while minimizing the impact on user use.

[0026] Embodiment 6

[0027] Data recording and analysis, data recording, the system should record the battery pack's charge and discharge data, status monitoring data, fault diagnosis data, etc. in real time. The data record should include key information such as timestamp, data value, data source, etc. for subsequent analysis and processing. Data analysis and processing, regularly analyze and process the recorded data to generate performance reports and fault analysis reports for the battery pack. The performance report should include indicators such as the remaining battery power, health status, and charge and discharge efficiency of the battery so that users can understand the battery usage. The fault analysis report should include analysis content such as fault type, fault frequency, and fault cause, so that users or maintenance personnel can promptly troubleshoot and optimize the system. Strategy optimization, based on the data analysis results, optimize and adjust the charge and discharge management strategy, such as adjusting the charging current, discharge current, and balancing frequency. Parameters such as power consumption and power consumption, strategy optimization should aim to improve the efficiency and life of the battery pack while ensuring the safety and stability of the system, system sleep and wake-up, sleep mode entry, when the system has no operation for a long time, the system should automatically enter sleep mode, in sleep mode, the system should turn off unnecessary circuits and sensors to reduce energy consumption and extend battery life, wake-up condition detection, the system should monitor the external trigger signal in real time to determine whether the system needs to be woken up, when a valid wake-up signal is detected, the system should immediately wake up from sleep mode and resume normal working state, wake-up process control, during the wake-up process, the system should gradually start the circuits and sensors to ensure that the system smoothly transitions to normal working state, at the same time, the system should check the status of the battery pack and protection board to ensure that the system can work safely and reliably.

[0028] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions only describe the principles of the present invention. The present invention may be subject to various changes and improvements without departing from the spirit and scope of the present invention. These changes and improvements fall within the scope of the present invention. The scope of protection claimed by the present invention is defined by the attached claims and their equivalents.

Claims

1. An intelligent charge and discharge management system based on a lithium battery protection board, including an initialization system, real-time monitoring of battery status, charging management, discharge management, cell balancing management, fault diagnosis and early warning, data recording and analysis, system sleep and wake-up. After the system is powered on, hardware initialization is first performed, including initialization settings of components such as protection board circuits, communication interfaces, and sensors. The voltage and current data of the battery pack are collected in real time through the built-in voltage sensor and current sensor of the protection board. When the system detects that the battery needs to be charged, a charging strategy is formulated according to the current state of the battery. When the system detects that the battery needs to be discharged, a discharge strategy is formulated according to the current state of the battery and load requirements. The voltage difference of each cell in the battery pack is regularly detected to determine whether cell balancing is required. The system regularly or in real time diagnoses the battery pack and the protection board to detect whether there is an abnormality or fault. The system records the charge and discharge data, status monitoring data, and fault diagnosis data of the battery pack in real time. When the system is not operated for a long time, it automatically enters sleep mode.

2. According to claim 1, the intelligent charge and discharge management system based on the lithium battery protection board is characterized in that: The initialization system, hardware initialization, normal operation, initialization of communication interface, including setting communication protocol, baud rate and other parameters, ensuring unimpeded communication with the host computer or user terminal, calibrating key sensors such as voltage sensors and current sensors to ensure the accuracy of collected data, parameter reading and setting: reading basic parameters of the battery pack, including battery type, capacity, rated voltage, etc., these parameters are usually stored in the EEPROM of the battery pack or protection board, and setting protection thresholds, overcharge protection voltage, over-discharge protection voltage, overcurrent protection current, etc. according to the read battery parameters to ensure that the battery works within a safe range, connection status check, check whether the connection between the battery pack and the protection board is firm, including the positive and negative poles of the battery, temperature sensor and other connection points, and detect the connection status of the battery pack through the communication interface or internal circuit to ensure that there is no open circuit or short circuit.

3. The intelligent charge and discharge management system based on the lithium battery protection board according to claim 1 is characterized in that: The real-time monitoring of battery status and data collection utilizes the built-in voltage sensor and current sensor of the protection board to collect the voltage and current data of the battery pack in real time. These data are the basis for judging the battery status. At the same time, the temperature data of the battery pack is collected to monitor whether the operating temperature of the battery is abnormal. The status calculation calculates the remaining power of the battery based on the collected voltage and current data. The coulomb counting method or the open circuit voltage method is usually used to evaluate the health status of the battery, taking into account factors such as the number of battery cycles and capacity attenuation, so as to provide a basis for battery maintenance and management. The temperature monitoring monitors the temperature of the battery pack in real time and compares it with the preset safe temperature range. If the temperature exceeds the safe range, the system should issue a warning signal and take corresponding cooling measures, such as starting the fan or reducing the charging current.

4. The intelligent charge and discharge management system based on the lithium battery protection board according to claim 1 is characterized in that: The charging management includes the formulation of charging strategies. When the system detects that the battery power is lower than a preset charging threshold, a charging strategy is formulated according to the current state of the battery. The charging strategy should include key parameters such as charging mode, charging current, charging voltage, and charging time. The charging process control includes controlling the output of the charging circuit to ensure that the charging current and voltage meet the preset charging strategy. During the charging process, the battery voltage, current, temperature and other parameters are monitored in real time, and the charging parameters are dynamically adjusted according to actual conditions. The discharge strategy is formulated. When the system detects that the battery needs to be discharged, a discharge strategy is formulated according to the current state of the battery and load requirements. The discharge strategy should include key parameters such as discharge current and discharge time to ensure that the battery is discharged within a safe current range. The discharge process control includes controlling the output of the discharge circuit to ensure that the discharge current meets the preset discharge strategy. The battery status, voltage, current, and remaining power during the discharge process are monitored in real time.

5. The intelligent charge and discharge management system based on the lithium battery protection board according to claim 1 is characterized in that: The cell balancing management and voltage difference detection regularly detect the voltage difference of each cell in the battery pack to determine whether cell balancing is required. When the voltage difference exceeds the preset threshold, it indicates that there is an imbalance between the cells and balancing is required. The balancing process control, if cell balancing is required, the system should start the balancing circuit to reduce the voltage difference between the cells by transferring electricity. During the balancing process, the system should monitor the status of the battery pack in real time to ensure that the balancing process is safe and effective. After the balancing is completed, the system should detect the voltage difference of the cells again to confirm the balancing effect. The fault diagnosis and early warning, fault diagnosis, the system should be regular or Perform fault diagnosis on the battery pack and protection board in real time to detect whether there are abnormalities or faults. Fault diagnosis should include hardware faults and software faults. Warning signals are issued. If a fault or abnormality is found, the system should immediately issue a warning signal, such as sound and light alarms, sending text messages or emails, etc. The warning signal should contain key information such as fault type, fault location, and fault time, so that users or maintenance personnel can handle it in time and take protective measures. According to the type and severity of the fault, the system should take corresponding protective measures, such as cutting off the charging and discharging circuits, reducing the output power, etc. The protective measures should ensure the safety of the battery and system, while minimizing the impact on user use.

6. The intelligent charge and discharge management system based on the lithium battery protection board according to claim 1 is characterized in that: The data recording and analysis, data recording, the system should record the battery pack's charge and discharge data, status monitoring data, fault diagnosis data, etc. in real time. The data record should include key information such as timestamp, data value, data source, etc. for subsequent analysis and processing. Data analysis and processing, regularly analyze and process the recorded data to generate performance reports and fault analysis reports for the battery pack. The performance report should include indicators such as the remaining power, health status, and charge and discharge efficiency of the battery so that users can understand the battery usage. The fault analysis report should include analysis content such as fault type, fault frequency, and fault cause so that users or maintenance personnel can promptly troubleshoot and optimize the system. Strategy optimization, based on the data analysis results, optimize and adjust the charge and discharge management strategy, such as adjusting the charging current, discharge current, and balancing frequency. Parameters such as rate, strategy optimization should aim to improve the efficiency and life of the battery pack while ensuring the safety and stability of the system, system sleep and wake-up, sleep mode entry, when the system has no operation for a long time, the system should automatically enter sleep mode, in sleep mode, the system should turn off unnecessary circuits and sensors to reduce energy consumption and extend battery life, wake-up condition detection, the system should monitor the external trigger signal in real time to determine whether the system needs to be woken up, when a valid wake-up signal is detected, the system should immediately wake up from sleep mode and resume normal working state, wake-up process control, during the wake-up process, the system should gradually start the circuit and sensor to ensure that the system smoothly transitions to normal working state, at the same time, the system should check the status of the battery pack and protection board to ensure that the system can work safely and reliably.