Method and system for managing voltage constant voltage threshold based on timeout constant current

Abstract

This application discloses a voltage constant voltage threshold management method and system based on timed constant current charging. The method includes: timing from the start of charging to obtain the battery charging time; determining in real time whether the battery charging time has reached a preset timeout period, and determining whether the stable charging voltage during the battery charging process is greater than or equal to the battery constant voltage threshold; if the battery charging time reaches the preset timeout period, and no stable charging voltage greater than or equal to the battery constant voltage threshold is detected during the battery charging process, then the current charging process is determined to be a timed constant current charging process, and the battery constant voltage threshold is updated based on the timed constant current charging process. This application manages the battery constant voltage charging threshold to address the problem of battery timed constant current charging, solving the problem that the battery cannot enter the constant voltage charging stage due to battery performance degradation, and effectively extending battery life by protecting battery charging health.

Description

Technical Field

[0001] This application relates to the field of constant voltage charging, specifically to a voltage constant voltage threshold management method and system based on timeout constant current. Background Technology

[0002] Because the presence of external current causes polarization within the battery, this polarization prevents the battery from being fully charged during the constant current charging phase alone. Therefore, a constant voltage charging phase is required after the constant current charging phase to ensure a full charge. Currently, the constant voltage charging phase typically begins when the battery voltage reaches its constant voltage threshold. However, as battery performance degrades during use, the achievable voltage during charging decreases. This can lead to issues such as voltage decay or environmental factors preventing the battery from reaching the constant voltage threshold and entering the constant voltage charging phase. Consequently, the battery may remain in the constant current charging phase for extended periods, resulting in repeated attempts to charge without fully charging, and the charging process failing to terminate properly. Summary of the Invention

[0003] This application provides a voltage constant threshold management method and system based on timeout constant current, and the specific technical solution is as follows:

[0004] The voltage constant current threshold management method based on timeout constant current specifically includes: timing from the start of charging to obtain the battery charging time; determining in real time whether the battery charging time has reached the preset timeout duration, while simultaneously detecting the stable charging voltage during the battery charging process, and determining whether the stable charging voltage during the battery charging process is greater than or equal to the battery constant voltage threshold; if the battery charging time has reached the preset timeout duration, and no stable charging voltage greater than or equal to the battery constant voltage threshold is detected during the battery charging process, then it is determined that the current charging process belongs to the timeout constant current charging process, and the battery constant voltage threshold is updated based on the timeout constant current charging process.

[0005] Furthermore, the detection of stable charging voltage during battery charging specifically includes: acquiring real-time charging voltage during battery charging; calculating the average value of all real-time charging voltages within the preset charging time interval at each preset charging time interval as the latest average charging voltage; and updating the stable charging voltage during the current charging process based on the latest average charging voltage.

[0006] Furthermore, updating the stable charging voltage in the current charging process based on the latest average charging voltage specifically includes: determining whether the latest average charging voltage is greater than the stable charging voltage; if the latest average charging voltage is greater than the stable charging voltage, then updating the stable charging voltage to be equal to the latest average charging voltage; if the latest average charging voltage is less than or equal to the stable charging voltage, then the stable charging voltage remains unchanged; wherein, the initial value of the stable charging voltage is equal to the latest average charging voltage obtained for the first time in the current charging process.

[0007] Furthermore, the step of updating the battery constant voltage threshold based on the timed constant current charging process specifically includes: obtaining the stable charging voltage of the current timed constant current charging process; and updating the battery constant voltage threshold to be equal to the stable charging voltage of the current timed constant current charging process.

[0008] Furthermore, the voltage threshold management method based on timeout constant current also includes: if it is determined that the current charging process belongs to the timeout constant current charging process, then the current charging process is recorded as the timeout constant current charging process; determining whether the battery has been charged for a preset number of consecutive times and all of them belong to the timeout constant current charging process; if the battery has been charged for a preset number of consecutive times and all of them belong to the timeout constant current charging process, then the battery constant voltage threshold is updated based on the preset number of consecutive timeout constant current charging processes.

[0009] Furthermore, the method of updating the battery constant voltage threshold based on a preset number of consecutive timed constant current charging processes specifically includes: acquiring the stable charging voltage of each timed constant current charging process during the preset number of consecutive timed constant current charging processes; filtering all acquired stable charging voltages by minimum value to obtain the minimum stable charging voltage; determining whether the minimum stable charging voltage is less than the battery constant voltage threshold; if the minimum stable charging voltage is less than the battery constant voltage threshold, updating the battery constant voltage threshold to be equal to the minimum stable charging voltage, thus completing the constant voltage threshold update; if the minimum stable charging voltage is greater than or equal to the battery constant voltage threshold, keeping the battery constant voltage threshold unchanged, thus completing the constant voltage threshold update.

[0010] Furthermore, the battery constant voltage threshold management method based on timeout constant current also includes: obtaining the real-time constant voltage threshold of the battery when it enters the constant voltage state during each charging process; and recording the real-time constant voltage threshold of the battery when it enters the constant voltage state during each charging process in a non-volatile memory within the battery assembly device.

[0011] Furthermore, the step of updating the battery constant voltage threshold based on the timed constant current charging process specifically includes: obtaining the stable charging voltage of the current timed constant current charging process; iterating through and determining whether the stable charging voltage of the current timed constant current charging process is less than all real-time constant voltage thresholds of the batteries recorded in the non-volatile memory within the battery assembly device; if the stable charging voltage of the current timed constant current charging process is less than all real-time constant voltage thresholds of the batteries recorded in the non-volatile memory within the battery assembly device, then updating the battery constant voltage threshold to be equal to the stable charging voltage of the current timed constant current charging process.

[0012] This application also discloses a voltage constant voltage threshold management system based on timeout constant current, specifically including: a battery charging duration timing module, used to start timing at the beginning of each battery charging process and end timing when the battery is fully charged in each battery charging process, to obtain the battery charging duration; a timeout comparison module, internally storing a preset timeout duration, used to receive the battery charging duration obtained by the battery charging duration timing module and determine whether the battery charging duration has reached the preset timeout duration; a stable charging voltage acquisition module, used to acquire the stable charging voltage during the charging process; a constant voltage threshold comparison module, used to determine whether the stable charging voltage during the battery charging process is greater than or equal to the battery constant voltage threshold; a timeout constant current charging determination module, used to determine whether the charging process belongs to a timeout constant current charging process based on the comparison result of whether the battery charging duration has reached the preset timeout duration output by the timeout comparison module and the comparison result of whether the stable charging voltage during the battery charging process is greater than or equal to the battery constant voltage threshold output by the constant voltage threshold update module; and a constant voltage threshold update module, used to update the battery constant voltage threshold to be equal to the stable charging voltage when the charging process belongs to a timeout constant current charging process.

[0013] Furthermore, the voltage constant threshold management system based on timeout constant current also includes: a real-time charging voltage acquisition module, used to acquire the real-time charging voltage during the battery charging process; a latest average charging voltage acquisition module, used to calculate the average value of all real-time charging voltages within a latest preset charging time interval as the latest average charging voltage during a single charging process; wherein, the stable charging voltage acquisition module is used to take the maximum value of all the latest average charging voltages acquired by the latest average charging voltage acquisition module during a single charging process as the stable charging voltage of the single charging process.

[0014] The voltage constant voltage threshold management method and system based on timed constant current described in this application manages the floating adjustment of the battery constant voltage threshold to address the problem of battery timed constant current charging. This solves the problem that batteries may experience prolonged constant current charging and fail to smoothly enter the constant voltage charging stage due to battery performance degradation or environmental influences, effectively protecting battery charging health and extending battery life. Attached Figure Description

[0015] Figure 1 This is a flowchart illustrating a voltage constant threshold management method based on timeout constant current according to one embodiment of this application.

[0016] Figure 2 This is a schematic diagram of a module of a voltage constant threshold management system based on timeout constant current according to one embodiment of this application. Implementation

[0017] The embodiments of this application will now be described in detail with reference to the accompanying drawings. It should be understood that the specific embodiments described below are for illustrative purposes only and are not intended to limit the scope of this application.

[0018] When an external current is present, polarization will occur inside the battery. Due to the polarization generated inside the battery during the constant current charging stage, the battery cannot be fully charged by the constant current charging stage alone. Therefore, in order to fully charge the battery, constant voltage charging is required after the constant current charging stage. Currently, the constant voltage charging stage typically begins when the battery voltage reaches the constant voltage charging threshold. However, due to the decrease in achievable voltage during battery charging as battery performance degrades, or the influence of the battery's application environment, the battery may fail to reach the constant voltage threshold and enter the constant voltage charging stage smoothly. This results in the battery remaining in the constant current charging stage for extended periods, leading to repeated constant current charging attempts that fail to fully charge the battery and prevent the charging process from ending normally. Therefore, to ensure the battery can perform a normal charging process and remain fully charged even after performance degradation, this application manages the constant voltage charging threshold based on the charging time required for normal battery charging, addressing the issue of excessive constant current charging. This solves the problem of the battery failing to enter the constant voltage charging stage smoothly due to performance degradation, reduces prolonged constant current charging, and effectively extends battery life by protecting battery charging health.

[0019] Specifically, this application provides a voltage constant threshold management method based on timeout constant current, such as... Figure 1 As shown, this specifically includes: timing from the start of charging to obtain the battery charging time; wherein, the battery charging time refers to the timing starting from the beginning of a charging process and ending when the battery is fully charged in that charging process.

[0020] The system continuously monitors whether the battery charging time has reached the preset timeout period, and simultaneously detects the stable charging voltage during the battery charging process, determining whether the stable charging voltage is greater than or equal to the battery constant voltage threshold. The preset timeout period is a time length set based on charging parameters and the required charging capacity for a full charge, used to identify whether the battery cannot be fully charged for an extended period. Specifically, the preset timeout period can be, but is not limited to, setting it to the time required for the battery to fully charge normally from its current charge level, plus an acceptable error range for the charging time. For example, if the battery is expected to fully charge normally from its current charge level in 40 minutes, the preset timeout period can be, but is not limited to, 45 minutes, 50 minutes, etc. The stable charging voltage refers to the maximum voltage value that the battery can stably reach during the current charging process. The method for determining whether the battery can stably reach this voltage can be, but is not limited to, the average battery voltage obtained by averaging all voltage values ​​collected over a period of time during the charging process; or, the battery can stably reach that voltage value if a certain voltage value is collected a preset number of times during a period of time during the charging process. The preset number of collections is set based on the required voltage stability and can be, but is not limited to, 2 times, 3 times, etc. The battery constant voltage threshold is the voltage value used to determine whether the battery charging process can enter the constant voltage charging stage. When the battery voltage rises to the battery constant voltage threshold during charging, the constant current charging stage ends and the constant voltage charging stage begins.

[0021] If the battery charging time reaches the preset timeout period and no stable charging voltage greater than or equal to the battery constant voltage threshold is detected during the battery charging process, then the current charging process is determined to be a timeout constant current charging process, and the battery constant voltage threshold is updated based on the timeout constant current charging process.

[0022] If the battery charging time ends before the preset timeout period during a single charge, it means the battery is fully charged and there is no issue of failing to enter the constant voltage charging stage. Consequently, there is no need to update the battery constant voltage threshold. Similarly, if a stable charging voltage is greater than or equal to the battery constant voltage threshold during a single charge, it means the battery is able to enter the constant voltage charging stage. Consequently, there is no need to update the battery constant voltage threshold.

[0023] Specifically, when a battery cannot enter the constant voltage charging stage due to performance degradation or other reasons, it cannot reach a fully charged state because it is continuously in the constant current charging stage. Therefore, the battery charging time cannot end normally. Thus, this embodiment compares the battery charging time with a preset timeout period as one of the reference factors for determining whether the battery has entered the constant voltage charging stage normally. Since the condition for a battery to enter the constant voltage charging stage is that the battery voltage can reach the battery constant voltage threshold during charging, if the battery voltage fails to reach the constant voltage threshold, it is considered that the battery charging process is still in the constant current charging stage. To avoid the battery only momentarily reaching the battery constant voltage threshold and failing to actually enter the constant voltage charging stage stably, this embodiment compares the stable charging voltage during the charging process with the battery constant voltage threshold. This improves the accuracy of the determination result for the battery entering the constant voltage charging stage, thereby more accurately updating the battery constant voltage threshold for cases where the battery cannot enter the constant voltage charging stage. This ensures that even if the battery performance degrades, it can still reach the updated battery constant voltage threshold in subsequent charging processes and thus successfully enter the constant voltage charging stage.

[0024] In a preferred embodiment of this application, the detection of stable charging voltage during battery charging specifically includes: acquiring real-time charging voltage during battery charging; calculating the average value of all real-time charging voltages within a preset charging time interval before the current moment as the latest average charging voltage at preset charging time intervals; and updating the stable charging voltage of the current charging process based on the latest average charging voltage. The preset charging time interval is a pre-set time length used to limit the update frequency of the latest average charging level during charging, and can be, but is not limited to, 10 seconds, 30 seconds, 60 seconds, etc. All real-time charging voltages within the preset charging time interval before the current moment refer to all real-time charging voltages acquired within the preset charging time interval before the current moment. Specifically, this embodiment uses the average value of all real-time charging voltages acquired within the preset charging time interval as the latest average charging voltage. The calculated latest average charging voltage is determined by the average value to be the voltage value that the battery can sustainably reach for a period of time during charging, so that the stable charging voltage is updated based on the latest average charging voltage, and the updated stable charging voltage is the voltage value that the battery can stably reach during charging.

[0025] In a preferred embodiment of this application, updating the stable charging voltage in the current charging process based on the latest average charging voltage specifically includes: determining whether the latest average charging voltage is greater than the stable charging voltage; if the latest average charging voltage is greater than the stable charging voltage, then updating the stable charging voltage to be equal to the latest average charging voltage; if the latest average charging voltage is less than or equal to the stable charging voltage, then the stable charging voltage remains unchanged; wherein, the initial value of the stable charging voltage is equal to the latest average charging voltage obtained for the first time in the current charging process.

[0026] Specifically, the step of updating the battery constant voltage threshold based on the timed constant current charging process includes: obtaining the stable charging voltage of the current timed constant current charging process; and updating the battery constant voltage threshold to be equal to the stable charging voltage of the current timed constant current charging process. This embodiment compares the latest average charging voltage obtained each time with the stable charging voltage, and updates the stable charging voltage based on the comparison result. This ensures that the updated stable charging voltage always remains equal to the maximum charging voltage that the battery can stably reach during a single charging process. Therefore, when updating the battery constant voltage threshold based on the stable charging voltage, the updated battery constant voltage threshold remains at a reasonably large value. This prevents the battery constant voltage threshold from being updated to a smaller voltage threshold to allow the battery to enter the constant voltage charging stage prematurely, thus ensuring the rationality of the battery constant voltage threshold update.

[0027] As a preferred embodiment of this application, the voltage threshold management method based on timeout constant current further includes: if it is determined that the current charging process belongs to the timeout constant current charging process, then recording the current charging process as a timeout constant current charging process; determining whether the battery's charging processes for a preset number of consecutive cycles all belong to the timeout constant current charging process; if the battery's charging processes for a preset number of consecutive cycles all belong to the timeout constant current charging process, then updating the battery constant voltage threshold based on the preset number of consecutive timeout constant current charging processes. The preset number of cycles is used to classify whether the battery is abnormally charged, and can be, but is not limited to, 3 times, 5 times, etc. This embodiment limits the preconditions for updating the battery constant voltage threshold. The precondition is set as the occurrence of a timeout constant current charging process for a preset number of consecutive cycles. By limiting the battery constant voltage threshold to only be updated after multiple consecutive occurrences of timeout constant current charging processes, frequent updates of the battery constant voltage threshold are avoided, effectively controlling the update frequency of the battery constant voltage threshold. It also avoids the situation where an abnormal battery charging process occurs by chance, leading to an abnormal update of the battery constant voltage threshold.

[0028] In a preferred embodiment of this application, the method of updating the battery constant voltage threshold based on a preset number of consecutive timed constant current charging processes specifically includes: obtaining the stable charging voltage of each timed constant current charging process during the preset number of consecutive timed constant current charging processes; filtering all obtained stable charging voltages by minimum value to obtain the minimum stable charging voltage; determining whether the minimum stable charging voltage is less than the battery constant voltage threshold; if the minimum stable charging voltage is less than the battery constant voltage threshold, updating the battery constant voltage threshold to be equal to the minimum stable charging voltage, thus completing the constant voltage threshold update; if the minimum stable charging voltage is greater than or equal to the battery constant voltage threshold, keeping the battery constant voltage threshold unchanged, thus completing the constant voltage threshold update. This embodiment optimizes the rationality of the battery constant voltage threshold update by filtering the minimum stable charging voltage during the preset number of consecutive timed constant current charging processes, ensuring that if the minimum stable charging voltage is used as the battery constant voltage threshold, all previous preset number of consecutive timed constant current charging processes can enter the constant voltage charging stage.

[0029] As a preferred embodiment of this application, the battery constant voltage threshold management method based on timeout constant current further includes: acquiring the real-time constant voltage threshold of the battery when it enters a constant voltage state during each charging process; and recording the real-time constant voltage threshold of the battery when it enters a constant voltage state during each charging process in a non-volatile memory within the battery-equipped device. This embodiment uses non-volatile memory to record the real-time constant voltage threshold of the battery, achieving the goal of not losing the stored data when power is lost, and avoiding the loss of the recorded real-time constant voltage threshold of the battery when the device equipped with the battery stops operating. By recording the real-time constant voltage threshold of the battery each time the battery enters a constant voltage state, the actual performance degradation of the battery can be obtained.

[0030] In a preferred embodiment of this application, the step of updating the battery constant voltage threshold based on the timed constant current charging process specifically includes: obtaining the stable charging voltage of the current timed constant current charging process; iterating through and determining whether the stable charging voltage of the current timed constant current charging process is less than all real-time constant voltage thresholds of the battery recorded in the non-volatile memory of the battery assembly device; if the stable charging voltage of the current timed constant current charging process is less than all real-time constant voltage thresholds of the battery recorded in the non-volatile memory of the battery assembly device, then updating the battery constant voltage threshold to be equal to the stable charging voltage of the current timed constant current charging process; if there is a recorded real-time constant voltage threshold of the battery recorded in the non-volatile memory of the battery assembly device that is less than the stable charging voltage of the current timed constant current charging process, then updating the battery constant voltage threshold to the minimum value of the real-time constant voltage threshold of the battery recorded in the non-volatile memory of the battery assembly device. Since the battery performance degradation varies under different environments—for example, the stable charging voltage during charging in extremely cold conditions differs from that during charging in normal temperature conditions—this embodiment compares the stable charging voltage of the current timeout constant current charging process with the real-time constant voltage thresholds of all batteries recorded in the non-volatile memory, and updates the battery constant voltage thresholds based on the comparison results.

[0031] As a preferred embodiment of this application, a voltage constant threshold management system based on timeout constant current is provided, such as... Figure 2 As shown, it specifically includes: a battery charging time timing module, a timeout comparison module, a stable charging voltage acquisition module, a constant voltage threshold comparison module, a timeout constant current charging determination module, and a constant voltage threshold update module. Specifically,

[0032] The battery charging time timing module is used to start timing at the beginning of each battery charging process and stop timing when the battery is fully charged in each battery charging process to obtain the battery charging time.

[0033] The timeout comparison module internally stores a preset timeout duration. It receives the battery charging time from the battery charging time timing module and determines whether the battery charging time has reached the preset timeout duration. The preset timeout duration is a time length set based on charging parameters and the charging capacity required for the battery to be fully charged. It is used to identify whether the battery cannot be fully charged for a long time. The specific setting method can be, but is not limited to, setting the preset timeout duration to be greater than the time required for the battery to be fully charged normally from its current charge level. For example, if the battery is expected to be fully charged normally from its current charge level in 40 minutes, the preset timeout duration can be, but is not limited to, set to a time length of 45 minutes, 50 minutes, etc.

[0034] The stable charging voltage acquisition module is used to acquire the stable charging voltage during the charging process. The stable charging voltage refers to the maximum voltage value that the battery can stably reach during the current charging process. The method of determining whether the voltage is a stable voltage value that the battery can reach can be, but is not limited to, the average value of the battery voltage obtained by averaging all the voltage values ​​collected within a certain period of time during the charging process, or, the battery can stably reach that voltage value if a certain voltage value is collected a certain number of times within a certain period of time during the charging process reaches a preset number of collections.

[0035] The constant voltage threshold comparison module is used to determine whether the stable charging voltage during the battery charging process is greater than or equal to the battery constant voltage threshold. The battery constant voltage threshold is a voltage value used to determine whether the battery charging process can enter the constant voltage charging stage. When the battery voltage can rise to the battery constant voltage threshold during the battery charging process, the constant current charging stage ends and the constant voltage charging stage begins.

[0036] The timeout constant current charging determination module is used to determine whether the charging process belongs to the timeout constant current charging process based on the comparison result of whether the battery charging time output by the timeout comparison module reaches the preset timeout time, and the comparison result of whether the stable charging voltage during the battery charging process output by the constant voltage threshold update module is greater than or equal to the battery constant voltage threshold.

[0037] The constant voltage threshold update module is used to update the battery constant voltage threshold to be equal to the stable charging voltage when the charging process is a timeout constant current charging process.

[0038] In a preferred embodiment of this application, the voltage constant threshold management system based on timeout constant current further includes: a real-time charging voltage acquisition module and a latest average charging voltage acquisition module. Specifically, the real-time charging voltage acquisition module is used to acquire the real-time charging voltage during the battery charging process; the latest average charging voltage acquisition module is used to calculate the average value of all real-time charging voltages within a preset charging time interval during a single charging process as the latest average charging voltage; wherein, the preset charging time interval is a pre-set time length used to limit the update frequency of the latest average charging level during the charging process, and may be, but is not limited to, 10 seconds, 30 seconds, 60 seconds, etc. The stable charging voltage acquisition module is used to take the maximum value of all the latest average charging voltages acquired by the latest average charging voltage acquisition module during a single charging process as the stable charging voltage of the single charging process. This embodiment limits the maximum value of the latest average charging voltage during a single charge to the stable charging voltage of the single charge. This ensures that subsequent updates to the battery constant voltage threshold are based on the maximum stable charging voltage that the battery can achieve during charging. This limits the battery to only enter the constant voltage charging stage in the latter half of the charging process, thus avoiding the situation where the battery enters the constant voltage charging stage too early due to an excessively small constant voltage threshold, which would affect the battery charging efficiency.

[0039] In a preferred embodiment of this application, the voltage constant voltage threshold management system based on timeout constant current further includes a non-volatile memory. The non-volatile memory stores the real-time constant voltage threshold of the battery when it enters the constant voltage charging phase during each charging process. This embodiment uses non-volatile memory to store the real-time constant voltage threshold of the battery, preventing data loss due to battery inactivity.

[0040] It should be noted that any process or method description in the flowchart or otherwise described herein can be understood as representing a module, segment, or portion of code comprising one or more executable instructions for implementing a particular logical function or process, and the scope of the preferred embodiments of this application includes additional implementations in which functions may be performed not in the order described or discussed, including substantially simultaneously or in reverse order according to the functions involved, as should be understood by those skilled in the art to which embodiments of the present invention pertain.

[0041] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A voltage constant threshold management method based on timeout constant current, characterized in that, The voltage constant threshold management method based on timeout constant current specifically includes: The timer starts counting from the moment charging begins, to obtain the battery charging time. It can determine in real time whether the battery charging time has reached the preset timeout period, and at the same time detect the stable charging voltage during the battery charging process, and determine whether the stable charging voltage during the battery charging process is greater than or equal to the battery constant voltage threshold. If the battery charging time reaches the preset timeout period and no stable charging voltage greater than or equal to the battery constant voltage threshold is detected during the battery charging process, then the current charging process is determined to be a timeout constant current charging process, and the battery constant voltage threshold is updated based on the timeout constant current charging process. Specifically, detecting the stable charging voltage during battery charging includes: acquiring the real-time charging voltage during battery charging; calculating the average value of all real-time charging voltages within the preset charging time interval at each preset charging time interval as the latest average charging voltage; and updating the stable charging voltage during the current charging process based on the latest average charging voltage. Specifically, updating the battery constant voltage threshold based on the timed constant current charging process includes: obtaining the stable charging voltage of the current timed constant current charging process; and updating the battery constant voltage threshold to be equal to the stable charging voltage of the current timed constant current charging process.

2. The voltage constant threshold management method based on timeout constant current according to claim 1, characterized in that, The process of updating the stable charging voltage during the current charging process based on the latest average charging voltage specifically includes: Determine whether the latest average charging voltage is greater than the stable charging voltage; If the latest average charging voltage is greater than the stable charging voltage, then the stable charging voltage is updated to be equal to the latest average charging voltage. If the latest average charging voltage is less than or equal to the stable charging voltage, the stable charging voltage remains unchanged. The initial value of the stable charging voltage is equal to the latest average charging voltage obtained for the first time during the current charging process.

3. The voltage constant threshold management method based on timeout constant current according to claim 1, characterized in that, The voltage constant threshold management method based on timeout constant current also includes: If it is determined that the current charging process is a timeout constant current charging process, then the current charging process is recorded as a timeout constant current charging process. The process of determining whether the battery has been charged for a preset number of consecutive times is considered a timeout constant current charging process. If all the charging processes of the battery for a preset number of consecutive cycles are timeout constant current charging processes, then the constant voltage threshold of the battery is updated based on the preset number of consecutive timeout constant current charging processes.

4. The voltage constant threshold management method based on timeout constant current according to claim 3, characterized in that, The constant voltage threshold update for the battery based on the timeout constant current charging process of a consecutive preset number of times specifically includes: Obtain the stable charging voltage for each timeout constant current charging process during a preset number of consecutive timeout constant current charging processes; The minimum value is selected from all the obtained stable charging voltages; Determine whether the minimum stable charging voltage is less than the battery constant voltage threshold. If the minimum stable charging voltage is less than the battery constant voltage threshold, then the battery constant voltage threshold is updated to be equal to the minimum stable charging voltage, thus completing the constant voltage threshold update. If the minimum stable charging voltage is greater than or equal to the battery constant voltage threshold, then the battery constant voltage threshold remains unchanged, and the constant voltage threshold update is completed.

5. The voltage constant threshold management method based on timeout constant current according to claim 1, characterized in that, The voltage constant threshold management method based on timeout constant current also includes: Obtain the real-time constant voltage threshold of the battery when it enters a constant voltage state during each charging process. The real-time constant voltage threshold of the battery when it enters a constant voltage state during each charging process is recorded in the non-volatile memory within the battery assembly device.

6. The voltage constant threshold management method based on timeout constant current according to claim 5, characterized in that, The method of updating the battery constant voltage threshold based on the timed constant current charging process specifically includes: Obtain the stable charging voltage of the current timeout constant current charging process; Iterate through and determine whether the stable charging voltage of the current timeout constant current charging process is less than the real-time constant voltage threshold of all batteries recorded in the non-volatile memory of the battery assembly device. If the stable charging voltage of the current timeout constant current charging process is less than the real-time constant voltage threshold of all batteries recorded in the non-volatile memory of the battery assembly device, then the battery constant voltage threshold is updated to be equal to the stable charging voltage of the current timeout constant current charging process.

7. A voltage constant threshold management system based on timeout constant current, characterized in that, The voltage constant threshold management system based on timeout constant current specifically includes: The battery charging time timing module is used to start timing at the beginning of each battery charging process and stop timing when the battery is fully charged in each battery charging process, so as to obtain the battery charging time. The timeout comparison module stores a preset timeout duration and receives the battery charging duration from the battery charging duration timing module. It will then determine whether the battery charging duration has reached the preset timeout duration. The stable charging voltage acquisition module is used to acquire the stable charging voltage during the charging process. Specifically, it includes: acquiring the real-time charging voltage during the battery charging process; calculating the average value of all real-time charging voltages within the preset charging time interval at each preset charging time interval as the latest average charging voltage; and updating the stable charging voltage of the current charging process based on the latest average charging voltage. The constant voltage threshold comparison module is used to determine whether the stable charging voltage during battery charging is greater than or equal to the battery constant voltage threshold. The timeout constant current charging determination module is used to determine whether the charging process belongs to the timeout constant current charging process based on the comparison result of whether the battery charging time output by the timeout comparison module reaches the preset timeout time, and the comparison result of whether the stable charging voltage during the battery charging process output by the constant voltage threshold update module is greater than or equal to the battery constant voltage threshold. The constant voltage threshold update module is used to obtain the stable charging voltage of the current timeout constant current charging process when the charging process is a timeout constant current charging process; and update the battery constant voltage threshold to be equal to the stable charging voltage of the current timeout constant current charging process.

8. The voltage constant threshold management system based on timeout constant current according to claim 7, characterized in that, The voltage constant threshold management system based on timeout constant current also includes: A real-time charging voltage acquisition module is used to acquire the real-time charging voltage during the battery charging process. The latest average charging voltage acquisition module is used to calculate the average value of all real-time charging voltages within a preset charging time interval during a single charging process, and use this value as the latest average charging voltage. The stable charging voltage acquisition module is used to take the maximum value of all the latest average charging voltages acquired by the latest average charging voltage acquisition module during a single charging process as the stable charging voltage for the single charging process.

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