Integrated device and control method for a communication power supply and a battery core capacity

Abstract

The application discloses an integrated device and a control method for communication power supply and battery capacity, and belongs to the technical field of remote maintenance of communication power supply and communication battery. The integrated power supply capacity monitoring module remotely receives a capacity instruction, controls a communication high-frequency switching power supply module or a DC / DC capacity monitoring module to perform constant-current discharge on a battery pack, and calculates an actual capacity according to discharge parameters; during the discharging process, when AC input is normal and the load is light, the discharge energy of the battery is boosted by the DC / DC capacity monitoring module and then fed back to a DC bus; the intelligent energy distribution unit dynamically distributes power according to the load priority and the remaining capacity of the battery, and executes selective power-off protection in an abnormal condition. The application can overcome the technical problems of the conventional communication power supply and capacity monitoring device, such as separate setting, low coupling degree, complicated operation, high cost, low efficiency and the inability to perform remote intelligent operation and maintenance, and realizes the integration of the communication power supply and the battery capacity and the remote intelligent operation and maintenance.

Description

Technical Field

[0001] This invention relates to the field of remote maintenance technology for communication power supplies and communication batteries, and more specifically to an integrated device and control method for the capacity of a communication power supply and a battery. Background Technology

[0002] The communication power supply is the energy source for all communication equipment, and its reliability directly determines the reliability of communication services. The communication battery is the only backup protection for the communication power supply; in the event of an AC power outage, the communication battery becomes the last lifeline for communication equipment and services.

[0003] The existing power communication power supply system has the following shortcomings: Equipment is separate and has low coupling: Traditional communication power supply devices and battery capacity devices are set up independently, and the monitoring, alarm and protection linkage mechanisms between the two are lacking and inconsistent in definition, which leads to a decrease in the overall reliability of the system.

[0004] High cost and large space occupation: The core capacity unit is purchased and installed separately, which increases the procurement cost and the space occupied in the computer room. At the same time, two sets of monitoring sensors are required for power monitoring and battery core capacity respectively, resulting in resource waste.

[0005] Unintelligent energy distribution: Existing power systems cannot dynamically distribute energy based on load priority and remaining battery capacity, and cannot achieve priority-based intelligent power-down protection during AC power outages.

[0006] Insufficient remote operation and maintenance capabilities: Power switches cannot be remotely controlled, and capacity testing requires manual on-site operation, which is cumbersome, inefficient, and poses a risk of communication interruption.

[0007] Therefore, how to provide an integrated device and control method for communication power supply and battery capacity is a problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0008] In view of this, the present invention provides an integrated device and control method for communication power supply and battery capacity, which overcomes the shortcomings of the prior art, such as separate setting of traditional communication power supply and capacity device, low coupling, cumbersome operation, high cost, low efficiency and inability to remotely and intelligently operate and maintain.

[0009] To achieve the above objectives, the present invention adopts the following technical solution: An integrated device for communication power supply and battery capacity control includes: Communication high-frequency switching power supply module, integrated power capacity monitoring module, lead-acid battery management system, DC / DC capacity module and intelligent energy distribution unit; The integrated power supply capacity monitoring module is connected to the communication high-frequency switching power supply module, the lead-acid battery management system, the DC / DC capacity module and the intelligent energy distribution unit, respectively, and forms a unified monitoring and control platform. The lead-acid battery management system is used to collect the operating status parameters of the battery pack in real time and to perform equalization charging, float charging and core capacity discharge control. The intelligent energy distribution unit dynamically allocates DC output power based on preset load priorities and remaining battery capacity, according to the instructions of the integrated power capacity monitoring module, and performs selective power-down protection in abnormal conditions. The integrated power capacity monitoring module is also used to remotely receive capacity control commands, control the communication high-frequency switching power supply module or the DC / DC capacity control module to remotely discharge the battery pack at a constant current, and calculate the actual capacity of the battery based on the discharge parameters, forming a closed-loop integrated control logic for remote capacity control and energy management.

[0010] Furthermore, the DC / DC core capacity module is an input / output transformer isolated DC / DC boost discharge module, with its input end connected to the battery pack and its output end connected to the DC bus, used to feed the battery discharge energy back to the DC load side when the AC input is normal.

[0011] Furthermore, the lead-acid battery management system includes: Individual voltage acquisition unit, current acquisition unit, temperature acquisition unit, and internal resistance detection unit; Each unit is connected to the integrated power supply capacity monitoring module via a serial communication bus.

[0012] Furthermore, the intelligent energy distribution unit includes: Multiple DC output branch switches, branch current / voltage monitoring modules, and priority storage units; The integrated power supply capacity monitoring module remotely controls the on / off state of each branch switch according to the branch priority and the battery charge state, thereby realizing priority-based intelligent power-off protection.

[0013] Furthermore, the integrated power supply capacity monitoring module has a built-in IEC 61850 communication protocol stack, supports multi-level interconnection with remote operation and maintenance platforms, and has real-time data display, alarm processing, remote upgrade and capacity task scheduling functions.

[0014] Furthermore, the communication high-frequency switching power supply module adopts a modular rectifier unit, supports hot-swapping, and has input overvoltage, input undervoltage, overtemperature, and output overcurrent protection functions.

[0015] A control method based on the integrated device includes the following steps: Step S1: The integrated power capacity monitoring module acquires real-time data on battery pack voltage, current, temperature, and internal resistance collected by the lead-acid battery management system. Step S2: Determine whether the preset capacity approval trigger conditions are met. The trigger conditions include a timed capacity approval cycle, a remote capacity approval command, or a battery performance degradation alarm. Step S3: When the core capacity triggering condition is met, control the DC / DC core capacity module or the communication high-frequency switching power supply module to perform constant current discharge on the battery pack, and record the discharge voltage, current and time in real time; Step S4: During the discharge process, if an abnormal AC input or a DC bus voltage lower than a preset threshold is detected, the core capacity is terminated and the system is switched back to float charging. Step S5: After discharging to the preset termination voltage of the battery pack, calculate the actual discharge capacity and generate a capacity verification report, which is then uploaded to the remote operation and maintenance platform. Step S6: Update the battery health status based on the capacity result and dynamically adjust the load priority strategy in the intelligent energy distribution unit.

[0016] Furthermore, the dynamic load priority adjustment strategy in step S6 includes: When the remaining battery capacity is lower than the first threshold, disconnect the lowest priority non-critical load branch. When the remaining capacity is below the second threshold, power is only supplied to the highest priority communication equipment branch. The first threshold is higher than the second threshold.

[0017] Furthermore, it also includes intelligent energy feedback control steps: When the AC input is normal and the DC bus load is light during the core capacitor discharge process, the battery discharge energy is boosted by the DC / DC core capacitor module and fed back to the DC bus for the load to use, reducing energy waste.

[0018] As can be seen from the above technical solution, compared with the prior art, the present invention provides an integrated device and control method for communication power supply and battery capacity control, integrating the monitoring, capacity control and maintenance of the communication power supply system and its battery to form a unified platform, unified monitoring and unified management, forming an integrated communication power supply capacity control device with power industry characteristics that integrates energy storage, function and battery management, enabling remote intelligent operation and maintenance and intelligent energy distribution.

[0019] This invention will first be piloted, then widely adopted, and finally extended to the entire power grid, demonstrating broad application prospects. It enables the integration, miniaturization, unification, and intelligentization of communication power supplies and nuclear power systems, directly contributing to improved operational reliability of communication power systems, enhanced operational stability of the power system, and ensuring safe electricity use for society, ultimately generating significant social benefits. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0021] Figure 1 This is a technical architecture diagram of the integrated communication power supply and battery capacity device of the present invention.

[0022] Figure 2 This is a design drawing of the overall structure of the front and back of the device of the present invention.

[0023] Figure 3 This is a detailed structural design diagram of the front view of the device of the present invention.

[0024] Figure 4 This is a system network deployment diagram of the device of the present invention.

[0025] Figure 5 This is a schematic diagram of the communication power supply technology of the device of the present invention.

[0026] Figure 6 This is a schematic diagram of the high-performance battery charging and discharging technology of the device of the present invention.

[0027] Figure 7 This is a schematic diagram of the AC switching principle of the device of the present invention.

[0028] Figure 8 This is a schematic diagram of the monitoring module of the device of the present invention. Detailed Implementation

[0029] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0030] This invention discloses an integrated device for communication power supply and battery capacity verification, comprising: Communication high-frequency switching power supply module, integrated power capacity monitoring module, lead-acid battery management system and intelligent energy distribution unit; The integrated power capacity monitoring module is communicatively connected to the communication high-frequency switching power supply module, the lead-acid battery management system and the intelligent energy distribution unit, and forms a unified monitoring and control platform. The lead-acid battery management system is used to collect the operating status parameters of the battery pack in real time and to perform equalization charging, float charging and core capacity discharge control. The intelligent energy distribution unit dynamically allocates DC output power based on preset load priorities and remaining battery capacity, according to the instructions of the integrated power capacity monitoring module, and performs selective power-down protection in abnormal conditions. The integrated power capacity monitoring module is also used to remotely receive capacity control commands, control the communication high-frequency switching power supply module or DC / DC capacity control module to remotely discharge the battery pack at a constant current, and calculate the actual capacity of the battery based on the discharge parameters, forming a closed-loop integrated control logic for remote capacity control and energy management.

[0031] Specifically, the DC / DC core capacity module is an input / output transformer isolated DC / DC boost discharge module. Its input end is connected to the battery pack, and its output end is connected to the DC bus. It is used to feed the battery discharge energy back to the DC load side when the AC input is normal.

[0032] Specifically, the lead-acid battery management system includes: Individual voltage acquisition unit, current acquisition unit, temperature acquisition unit, and internal resistance detection unit; Each unit is connected to the integrated power supply capacity monitoring module via a serial communication bus.

[0033] Specifically, the intelligent energy distribution unit includes: Multiple DC output branch switches, branch current / voltage monitoring modules, and priority storage units; The integrated power supply capacity monitoring module remotely controls the on / off state of each branch switch according to the branch priority and the battery charge state, thereby realizing priority-based intelligent power-off protection.

[0034] Specifically, the integrated power supply capacity monitoring module has a built-in IEC 61850 communication protocol stack, supports multi-level interconnection with remote operation and maintenance platforms, and has real-time data display, alarm processing, remote upgrade and capacity task scheduling functions.

[0035] Specifically, the communication high-frequency switching power supply module adopts a modular rectifier unit, supports hot-swapping, and has input overvoltage, input undervoltage, overtemperature and output overcurrent protection functions.

[0036] In one specific embodiment, see Figure 1 The present invention mainly includes: a communication high-frequency switching power supply module (including a rectifier module unit), an integrated power supply capacity monitoring module, a lead-acid battery management system (including a single cell acquisition unit and a BMS main control unit), and an intelligent energy distribution unit (including a low-voltage disconnect switch and a branch energy management unit). Figure 1 The system also illustrates the connection relationships between peripheral components such as AC input and surge protectors, DC / DC core capacity modules, and battery packs, and the four main modules mentioned above. Specifically, the dual AC inputs are switched via an ATS switch, and after rectification by multiple parallel AC / DC rectifier modules, the output is sent to the positive / negative busbar. The positive busbar is connected to battery pack 1 / 2 via D2 and K2, and to the load busbar via K1. The battery pack can also boost power to the load busbar via DC-DC and K5. The load busbar distributes power to the communication loads via an intelligent energy distribution unit. The entire system is uniformly monitored and managed by a control and logic processing unit, and is equipped with a 10-inch display screen and a power-down protection unit for local operation and maintenance and protection. Details are as follows: The two AC input lines are connected to the two AC input terminals of the ATS (Automatic Transfer Switch).

[0037] The output of the ATS is connected to the control and logic processing unit (which provides power and logic control for the monitoring module), and also supplies power in parallel to multiple AC / DC rectifier modules.

[0038] The control and logic processing unit is also connected to a 10-inch display screen for local human-computer interaction.

[0039] The positive terminals of all AC / DC rectifier modules are connected to the positive busbar, and the negative terminals are connected to the negative busbar.

[0040] A shunt is connected between the positive busbar and the negative busbar (used to detect the total current).

[0041] The positive busbar splits into two paths: One path is connected to the positive terminal of the load busbar via K1 (which is a DC contactor or relay); Another route connects to battery pack 1 and battery pack 2 via D2 (diode) and K2 (K2 is below D2 according to the word order; the positive terminal of D2 is connected to the positive busbar, and the negative terminal is connected to K2; the other end of K2 is connected to the positive terminal of the battery pack). The positive terminals of battery packs 1 and 2 are connected to the positive busbar via K2 and D2 (D2 prevents backflow, and K2 is used for battery connection control). The negative terminal of the battery packs is directly connected to the negative busbar.

[0042] Additionally, the diagram shows a DC-DC module (i.e., a DC / DC converter). Its input side may be connected to the battery pack or positive busbar, and its output side is connected to the load busbar or intelligent energy distribution unit. Based on the text layout, the DC-DC module is located below K2 and K1, suggesting that its input is taken from the battery pack side, and its output is connected to the load busbar via K5 for battery boost discharge feedback.

[0043] The input of the intelligent energy distribution unit is connected to the load busbar, and the output is split into multiple DC branches to supply communication loads and other priority loads respectively.

[0044] The intelligent energy distribution unit contains branch switches, current / voltage monitoring, and priority logic, and its control signals are connected to the control and logic processing unit.

[0045] The power-down protection unit is connected between the load busbar and the intelligent energy distribution unit or in parallel on the busbar, and is used to disconnect the load according to priority when the battery is undervoltage.

[0046] The sampling signal from the shunt is sent to the control and logic processing unit to monitor the total load current.

[0047] The control and logic processing unit (i.e., the integrated power supply capacity monitoring module) is connected via signal lines to: ATS (control switching and read status); each AC / DC rectifier module (adjust output voltage and read faults); K1, K2, and K5 (control the on / off state of DC contactors); DC-DC module (control discharge current and start / stop); intelligent energy distribution unit (issue branch on / off commands and obtain branch parameters); and a 10-inch display screen (display system status and receive touch commands).

[0048] In one specific embodiment, see Figure 2 The physical structure layout of the device is shown from both the front and back. See details. Figure 3 In the specific front view, the positive terminal of battery pack 1 is connected to "Battery 1+", and the negative terminal is connected to "Battery 1-"; the positive terminal of battery pack 2 is connected to "Battery 2+", and the negative terminal is connected to "Battery 2-". The DC branch load is connected between the "DC branch positive terminal" and the "DC branch negative terminal". Large DC loads can be connected between "Large Load+" and "Large Load-". Two AC inputs are connected to the top of the cabinet. Data from individual modules is transmitted in series via network cables and aggregated to the aggregation module. The RS485 ports between the two aggregation modules are connected by network cables, and another RS485 port of the aggregation module is connected by a network cable to the "CH2" port at the bottom of the main control display screen. The "LAN1" port at the bottom of the main control display screen is connected to the remote platform.

[0049] In one specific embodiment, see Figure 4The demonstration showcased the network deployment of the device within a remote operation and maintenance platform. The integrated power supply capacity monitoring module incorporates the IEC 61850 communication protocol stack and interconnects with the remote operation and maintenance platform via a LAN interface, supporting data exchange between multi-level monitoring capacity master stations.

[0050] In one specific embodiment, see Figure 5 It demonstrates the core technical principles of communication power supplies, highlighting the AC input, rectification and conversion, DC output, and charging and discharging circuits between the communication high-frequency switching power supply module and the battery pack.

[0051] In one specific embodiment, see Figure 6 This demonstrates the principle of high-performance battery charging and discharging technology, shows the topology of DC / DC isolated charging and discharging circuit under the control of lead-acid battery management system, and the path of energy feedback to the DC bus during core discharge.

[0052] In one specific embodiment, see Figure 7 This demonstrates the principle of automatic switching between dual AC inputs, including the primary AC input, the backup AC input, and the switching logic. This switching control is completed collaboratively by an integrated power supply capacity monitoring module.

[0053] In one specific embodiment, see Figure 8 The internal workings of the integrated power capacity monitoring module were demonstrated, including the data acquisition interface (connecting to the lead-acid battery management system), the communication interface (connecting to the intelligent energy distribution unit and remote platform), the human-machine interface, and the alarm processing logic.

[0054] A control method based on the integrated device includes the following steps: Step S1: The integrated power capacity monitoring module acquires real-time data on battery pack voltage, current, temperature, and internal resistance collected by the lead-acid battery management system. Step S2: Determine whether the preset capacity approval trigger conditions are met. The trigger conditions include a timed capacity approval cycle, a remote capacity approval command, or a battery performance degradation alarm. Step S3: When the core capacity triggering condition is met, control the DC / DC core capacity module or the communication high-frequency switching power supply module to perform constant current discharge on the battery pack, and record the discharge voltage, current and time in real time; Step S4: During the discharge process, if an abnormal AC input or a DC bus voltage lower than a preset threshold is detected, the core capacity is terminated and the system is switched back to float charging. Step S5: After discharging to the preset termination voltage of the battery pack, calculate the actual discharge capacity and generate a capacity verification report, which is then uploaded to the remote operation and maintenance platform. Step S6: Update the battery health status based on the capacity result and dynamically adjust the load priority strategy in the intelligent energy distribution unit.

[0055] Specifically, the dynamic load priority adjustment strategy in step S6 includes: When the remaining battery capacity is lower than the first threshold, disconnect the lowest priority non-critical load branch. When the remaining capacity is below the second threshold, power is only supplied to the highest priority communication equipment branch. The first threshold is higher than the second threshold.

[0056] Specifically, this also includes intelligent energy feedback control steps: When the AC input is normal and the DC bus load is light during the core capacitor discharge process, the battery discharge energy is boosted by the DC / DC core capacitor module and fed back to the DC bus for the load to use, reducing energy waste.

[0057] Specifically, during the core capacitor discharge process, when the AC input is normal and the DC bus load is light, this embodiment activates intelligent energy feedback control: the battery discharge energy is boosted through the DC / DC core capacitor module and fed back to the DC bus for load use, thereby avoiding the waste caused by energy consumption on resistive loads in traditional core capacitor methods. Testing has shown that this feedback method achieves high energy recovery efficiency.

[0058] Specifically, this device integrates communication power supply and battery monitoring capacity functions, significantly improving the reliability and operational efficiency of the communication power supply system. The design goal of this device is to integrate the communication power supply system and battery monitoring capacity functions into a unified management and monitoring platform. This integration not only reduces physical space requirements but also optimizes monitoring and maintenance processes, enhancing the system's intelligence level. The hardware components of the integrated capacity device include AC input and surge protectors, monitoring modules, rectifier modules, low-voltage disconnect switches, intelligent energy distribution units, and DC / DC capacity modules. The software platform supports interconnection of multi-level monitoring and capacity master stations, providing real-time data display, remote management, and alarm handling functions.

[0059] Specifically, the core of this invention lies in a high-frequency switching power supply. It employs a high-frequency rectifier module, which boasts high conversion efficiency and reduces energy loss. Its modular design facilitates maintenance and upgrades, enhancing system flexibility and scalability. The built-in 61850 monitoring module enables monitoring and management of the power system's operational status. Furthermore, the core principle of capacity assessment is to utilize a remote capacity assessment device to discharge the battery and monitor discharge parameters throughout the process to determine the battery's capacity. This process includes a DC / DC boost discharge module, parameter detection and recording, and safety isolation measures employing input / output transformer-isolated DC / DC technology, ensuring the safety and accuracy of the discharge process.

[0060] Specifically, the monitoring module of this invention is the brain of the system, providing a human-machine interface to realize real-time display and control of the system status, monitor the operating data of the power system and battery pack, and realize intelligent functions such as battery management and module energy-saving management. Simultaneously, it supports multiple communication protocols to achieve remote data transmission. The rectifier module, as the core of power conversion, features high efficiency, hot-swappable design, and innovative compatibility to adapt to different application needs. The intelligent energy distribution unit is responsible for energy management, realizing remote control and priority management of the power switch, and real-time monitoring of voltage, current, power, and other data of each branch. The DC / DC capacity module, as a key component of the remote capacity conversion function, has a wide operating voltage range, high conversion efficiency, and multiple protection functions. Battery management includes automatic equalization and float charging, battery protection, and multiple testing methods to ensure long-term stable battery operation.

[0061] Specifically, this invention ensures the stable and safe operation of the system through its reliability design, protection design, and energy-saving design. The use of resettable fuses, optocoupler isolation, and transformer isolation technologies improves the system's fault tolerance. Multiple protection mechanisms, including input overvoltage protection, input undervoltage protection, and overtemperature protection, prevent damage to the system from various abnormal conditions. The alarm function can promptly respond to abnormal situations such as AC input anomalies, output voltage anomalies, fuse blowouts, temperature anomalies, and monitoring unit failures, ensuring the safe operation of the system. The system platform supports multi-level monitoring and remote management, realizing intelligent operation and maintenance and improving the charging efficiency of the battery pack.

[0062] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on its differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. For the apparatus disclosed in the embodiments, since they correspond to the methods disclosed in the embodiments, the description is relatively simple; relevant parts can be referred to the method section.

[0063] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An integrated device for communication power supply and battery capacity verification, characterized in that, include: Communication high-frequency switching power supply module, integrated power capacity monitoring module, lead-acid battery management system, DC / DC capacity module and intelligent energy distribution unit; The integrated power supply capacity monitoring module is connected to the communication high-frequency switching power supply module, the lead-acid battery management system, the DC / DC capacity module and the intelligent energy distribution unit, respectively, and forms a unified monitoring and control platform. The lead-acid battery management system is used to collect the operating status parameters of the battery pack in real time and to perform equalization charging, float charging and core capacity discharge control. The intelligent energy distribution unit dynamically allocates DC output power based on preset load priorities and remaining battery capacity, according to the instructions of the integrated power capacity monitoring module, and performs selective power-down protection in abnormal conditions. The integrated power capacity monitoring module is also used to remotely receive capacity control commands, control the communication high-frequency switching power supply module or the DC / DC capacity control module to remotely discharge the battery pack at a constant current, and calculate the actual capacity of the battery based on the discharge parameters, forming a closed-loop integrated control logic for remote capacity control and energy management.

2. The integrated device for communication power supply and battery capacity as described in claim 1, characterized in that, The DC / DC core capacity module is an input / output transformer isolated DC / DC boost discharge module, wherein the input end is connected to the battery pack and the output end is connected to the DC bus, which is used to feed the battery discharge energy back to the DC load side when the AC input is normal.

3. The integrated device for communication power supply and battery capacity as described in claim 1, characterized in that, The lead-acid battery management system includes: Individual voltage acquisition unit, current acquisition unit, temperature acquisition unit, and internal resistance detection unit; Each unit is connected to the integrated power supply capacity monitoring module via a serial communication bus.

4. The integrated device for communication power supply and battery capacity as described in claim 1, characterized in that, The intelligent energy distribution unit includes: Multiple DC output branch switches, branch current / voltage monitoring modules, and priority storage units; The integrated power supply capacity monitoring module remotely controls the on / off state of each branch switch according to the branch priority and the battery charge state, thereby realizing priority-based intelligent power-off protection.

5. The integrated device for communication power supply and battery capacity as described in claim 1, characterized in that, The integrated power supply capacity monitoring module has a built-in IEC 61850 communication protocol stack, multi-level interconnection with the remote operation and maintenance platform, and features real-time data display, alarm processing, remote upgrades, and capacity task scheduling.

6. The integrated device for communication power supply and battery capacity as described in claim 1, characterized in that, The communication high-frequency switching power supply module adopts a modular rectifier unit, which includes hot-swappable design and has input overvoltage, input undervoltage, overtemperature and output overcurrent protection.

7. A control method based on the integrated device according to any one of claims 1 to 6, characterized in that, Includes the following steps: Step S1: The integrated power capacity monitoring module acquires real-time data on battery pack voltage, current, temperature, and internal resistance collected by the lead-acid battery management system. Step S2: Determine whether the preset capacity approval trigger conditions are met. The trigger conditions include a timed capacity approval cycle, a remote capacity approval command, or a battery performance degradation alarm. Step S3: When the core capacity triggering condition is met, control the DC / DC core capacity module or the communication high-frequency switching power supply module to perform constant current discharge on the battery pack, and record the discharge voltage, current and time in real time; Step S4: During the discharge process, if an abnormal AC input or a DC bus voltage lower than a preset threshold is detected, the core capacity is terminated and the system is switched back to float charging. Step S5: After discharging to the preset termination voltage of the battery pack, calculate the actual discharge capacity and generate a capacity verification report, which is then uploaded to the remote operation and maintenance platform. Step S6: Update the battery health status based on the capacity result and dynamically adjust the load priority strategy in the intelligent energy distribution unit.

8. The control method according to claim 7, characterized in that, The dynamic load priority adjustment strategy in step S6 includes: When the remaining battery capacity is lower than the first threshold, disconnect the lowest priority non-critical load branch. When the remaining capacity is below the second threshold, power is only supplied to the highest priority communication equipment branch. The first threshold is higher than the second threshold.

9. The control method according to claim 7, characterized in that, It also includes intelligent energy feedback control steps: When the AC input is normal and the DC bus load is light during the core capacitor discharge process, the battery discharge energy is boosted by the DC / DC core capacitor module and fed back to the DC bus for the load to use, reducing energy waste.

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