A method and apparatus for protecting a power supply of a communication device

Abstract

A communication device power supply battery power protection method and device belong to the power supply technical field of communication device, the method comprises: obtaining the total output power of at least two parallel switching power supply modules and the total consumption power of multiple machine discs;If the total output power is greater than the product of the total consumption power and the preset coefficient, it is determined that the backplane PCB power supply plane is abnormal;In response to the abnormality, the main power output capacity of the switching power supply module is adjusted.The switching power supply module also provides an independent auxiliary power output end for maintaining the operation of the machine disc internal management unit when the main power output is adjusted.In addition, the physical state parameters are monitored through the backplane sensor, and the power supply module is directly hardware turned off when the threshold value is exceeded.The application can identify the backplane micro short circuit abnormality, reduce the fault point energy supply, prevent the backplane from catching fire, while maintaining the management unit operation above the report alarm, and improve the power supply safety.

Description

Technical Field

[0001] This application relates to the field of power supply technology for communication equipment, and specifically to a method and device for power supply protection of a power supply battery for communication equipment. Background Technology

[0002] With the rapid development of communication technology and the deepening trend of ICT convergence, the power density of communication equipment is increasing. Traditional -48Vdc power supply methods in communication equipment rooms are insufficient to meet the evolving power supply needs of communication equipment due to high cable losses and complex power distribution links. Traditional -48V DC power supply is gradually evolving towards high-voltage DC or AC power supply; the internal partitioned power supply architecture of communication equipment needs to support built-in switching power supply modules with different input types to meet the application requirements of different power supply scenarios. To meet operators' requirements for energy conservation, emission reduction, and flexible configuration of switching power supply modules as needed, the internal power supply architecture of communication equipment has evolved from partitioned power supply to power pool power supply.

[0003] To ensure the reliability of the power supply system for communication equipment, existing technologies typically employ an N+N redundant power supply architecture. In practical applications, in addition to the N (N≥1) primary switching power supply modules (rated output current ≥50A, with overcurrent protection trigger current generally ≥60A, which is at least 1.2 times the rated output current), an additional N (N≥1) backup switching power supply modules are introduced. These 2N modules constitute an N+N redundant backup, with their outputs directly connected in parallel, forming a single-plane power pool power supply architecture within the communication equipment to supply power to all chassis within the equipment.

[0004] However, this battery-powered architecture has the following technical problems in practical applications: First, the backplane PCB suffers from current-carrying bottlenecks and is costly. Due to the compact internal structure of communication equipment and the inability of the chassis power connector to directly connect to the bus-bar, the power supply current must be gathered and carried through the backplane PCB within the communication equipment to supply power to the various chassis slots. The higher the power of the communication equipment and the more switching power supply modules it contains, the greater the current-carrying capacity of the backplane PCB. Although increasing the number of layers or copper foil thickness can improve the current-carrying capacity, certain areas of the backplane PCB still have current-carrying bottlenecks due to factors such as backplane PCB size, heat dissipation openings, and PCB trace safety avoidance, making it impossible to meet the power supply capacity of 2N switching power supply modules connected in parallel. Furthermore, increasing the number of layers or copper foil thickness significantly increases the cost of the backplane PCB.

[0005] Secondly, safety hazards are difficult to eliminate. During long-term use, the equipment backplane PCB is affected by environmental factors such as dust, humidity, and temperature, as well as human factors such as vibration during the insertion and removal of communication equipment chassis and damage to power connectors due to mis-insertion. This can easily lead to component failure in the power supply path of the power battery. This results in reduced insulation on the backplane PCB, causing carbonization and cracking of the PCB when a micro-short circuit or short circuit occurs in the PCB power battery. Further deterioration of insulation between different layers of the PCB can lead to abnormal power supply to the communication equipment, service interruptions, and in severe cases, even fires on the backplane PCB. The power supply path of the communication equipment backplane PCB has weak current-carrying points and cannot withstand the short-circuit current of 2N switching power supply modules simultaneously.

[0006] Secondly, the fault identification and protection mechanisms are inadequate. Specifically: 1) Difficulty in identifying micro-short circuits: The power supply current is carried through the equipment's backplane PCB, and the impedance of the power supply plane on the backplane PCB is relatively small (milliohms). Under normal impedance conditions of the power supply plane backplane and normal operation of the communication equipment, existing technologies cannot quickly identify micro-short circuits in the power supply plane of the backplane PCB, making it impossible to issue timely remote alarms. This results in maintenance personnel being unable to respond quickly and arrive at the communication equipment site in a timely manner to handle the fault, thus leading to serious accidents involving the communication equipment.

[0007] 2) Risk of Module Protection Failure: Communication equipment uses multiple switching power supply modules connected in parallel, with a normal output current of several hundred amperes (e.g., 5+5 redundancy, a total of 10 switching power supply modules, with a normal output current ≥500A). When the power supply path of the power battery is abnormal, due to the strong output capability of multiple switching power supply modules connected in parallel, it is difficult for a single switching power supply module to detect and trigger its protection function. Even if the switching power supply module triggers its protection function, it usually enters a hiccup restart mode. Multiple switching power supply modules hiccup restarting can still continue to supply energy to the fault point on the backplane of the communication equipment, causing continuous deterioration of the equipment's backplane PCB and even fire. Existing technology lacks a mechanism to promptly shut down the output of the switching power supply module in response to the protection state triggered by the switching power supply module, and cannot reduce the continuous power supply of the switching power supply module.

[0008] 3) Lack of multi-dimensional monitoring methods: Existing technologies lack a mechanism to calculate, adjust and limit the output capability of switching power supply modules in real time based on the power consumption of the equipment. They also lack means to monitor the physical state (such as temperature and smoke) in the corresponding area of ​​the backplane PCB. This makes it impossible to prevent the weak points of the power supply plane of the power supply battery from being continuously heated by large currents, causing carbonization and cracking of the weak points, which makes it difficult to reduce the risk of fire and combustion of the backplane PCB.

[0009] Therefore, there is an urgent need for a power supply protection method and device for communication equipment power supply batteries that can effectively solve the above problems. Summary of the Invention

[0010] This application provides a power supply protection method and system for communication equipment, which can solve the technical problems in the prior art where micro short circuits on the backplane PCB of communication equipment are difficult to identify in time due to current carrying bottlenecks, and the power module continuously provides energy to the fault point, causing backplane carbonization or even fire.

[0011] In a first aspect, embodiments of this application provide a power supply protection method for a communication device, applied to a communication device including a backplane PCB, at least two switching power supply modules connected to the backplane PCB, and multiple chassis, wherein the at least two switching power supply modules are connected in parallel to form a power pool to supply power to the multiple chassis; including: Obtain the total output power of the at least two switching power supply modules; Obtain the total power consumption of the plurality of chassis; If the total output power is greater than the product of the total power consumption and a preset coefficient, it is determined that there is an abnormal risk in the backplane PCB power supply plane and the output capability of the switching power supply module is adjusted to reduce the difference between the total output power and the total power consumption.

[0012] In conjunction with the first aspect, in one implementation, the preset coefficient is greater than 1.

[0013] In conjunction with the first aspect, in one embodiment, the switching power supply module provides a main power output terminal and an auxiliary power output terminal; The main power output terminal is connected to the power supply plane of the backplane PCB; The auxiliary power output terminal is independent of the main power output terminal and is used to supply power to the management unit in the chassis so as to maintain the operation of the management unit when the main power output terminal is abnormal.

[0014] In conjunction with the first aspect, in one embodiment, adjusting the output capability of the switching power supply module includes: One by one, shut down the main power output of the switching power supply module, or lower the current limiting point of the main power output of the switching power supply module; After each adjustment, the judgment step is re-executed. If the abnormality is still determined, the adjustment continues until the main power output of all switching power supply modules is shut down or the output current limiting point is reduced to the minimum.

[0015] In conjunction with the first aspect, in one implementation, it further includes: The physical state parameters monitored by the sensors set on the backplane PCB are obtained, including temperature or smoke concentration; If the physical state parameters exceed the preset threshold, the backplane PCB power supply plane is determined to be abnormal.

[0016] In conjunction with the first aspect, in one embodiment, the sensor is connected to the control enable terminal of the switching power supply module via a hardware link; the method further includes: When the physical state parameter exceeds a preset threshold, the level of the control enable terminal is directly changed by the sensor to shut down the main power output of the switching power supply module.

[0017] In conjunction with the first aspect, in one implementation, it further includes: Generate alarm information and report the alarm information to the network management system or drive the local alarm device; Receive a remote shutdown command, and based on the remote shutdown command, shut down some or all of the at least two switching power supply modules and the main control board.

[0018] Secondly, embodiments of this application provide a power supply protection device for a communication equipment battery, comprising: The first acquisition module is used to acquire the total output power of at least two switching power supply modules; The second acquisition module is used to acquire the total power consumption of multiple chassis; The judgment module is used to determine that the backplane PCB power supply plane is abnormal if the total output power is greater than the product of the total power consumption and a preset coefficient. A control module is used to adjust the output capability of the switching power supply module in response to an abnormality in the backplane PCB power supply plane, so as to reduce the difference between the total output power and the total power consumption.

[0019] Thirdly, embodiments of this application provide a communication device, including: Backplane PCB; At least two switching power supply modules are connected in parallel to the backplane PCB to form a power pool power supply architecture; Multiple chassis are connected to the backplane PCB and obtain power from the power supply architecture. A processor and a memory, wherein the memory stores a computer program, and the processor executes the computer program to implement the method.

[0020] Fourthly, embodiments of this application provide a computer-readable storage medium storing a computer program that, when executed by a processor, implements the method described thereon.

[0021] The beneficial effects of the technical solutions provided in this application include: By acquiring the total output power of the switching power supply module and the total power consumption of the chassis in real time and performing logical comparison, the output capacity of the power supply module is adjusted when an abnormality is detected in the power supply plane of the backplane PCB. This solves the technical problems in related technologies, such as the difficulty in timely identification of micro short circuits on the backplane PCB and the continuous power supply to the fault point caused by the parallel output of multiple modules, which leads to carbonization and fire. Combined with the independent output design of the main power and auxiliary power of the switching power supply module, and the hardware protection mechanism of the sensor signal directly controlling the enable pin of the power supply module, this further solves the technical problems in related technologies, such as service interruption caused by shutting down the main power of the chassis during the protection process, and protection failure when the management bus is abnormal. This enables the rapid disconnection of fault energy while ensuring the survival of the management system, delaying backplane deterioration and buying time for operation and maintenance. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the architecture of a power supply protection system for a communication device's power battery, provided as an embodiment of the present invention. Figure 2 A flowchart of a power supply protection method for communication equipment based on power consumption comparison provided in an embodiment of the present invention; Figure 3 A schematic diagram of real-time power detection of a communication equipment chassis (chassis 48V input circuit structure) is provided for an embodiment of the present invention. Figure 4 This is a schematic diagram of a power supply protection system architecture for a communication device including direct sensor hardware connection protection, provided in an embodiment of the present invention. Figure 5 A flowchart of a power supply protection method for communication equipment based on sensor monitoring provided in an embodiment of the present invention; Figure 6 This is a schematic diagram illustrating the application of remote alarm for a communication device according to an embodiment of the present invention. Detailed Implementation

[0023] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present application.

[0024] To make the objectives, technical solutions, and advantages of this application clearer, the embodiments of this application will be described in further detail below with reference to the accompanying drawings.

[0025] Example 1 Reference Figure 1 , Figure 3 and Figure 4 , Figure 1 This is a schematic diagram of the architecture of the first embodiment of the power supply protection system for communication equipment in this application. Figure 3 This is a schematic diagram of real-time power detection on the chassis of the communication equipment in this application. Figure 4 This is a schematic diagram of an architecture that includes direct hardware protection for sensors. (Example) Figure 1 and Figure 4 As shown, the communication device includes a chassis, a backplane PCB (Printed Circuit Board), at least two switching power supply modules, and multiple chassis.

[0026] The at least two switching power supply modules are pluggably installed in the power supply slot of the communication equipment. In this embodiment, the switching power supply modules adopt an N+N redundancy configuration, that is, they include N main modules and N backup modules, and the output terminals of all modules are connected in parallel. Specifically, each switching power supply module integrates two independent voltage output channels: The first output is the main power output, used to provide high-current DC voltage, such as 12V or 54V, with a rated output current that can be configured as needed (e.g., ≥50A). This output is connected to the main power plane of the backplane PCB to supply power to all high-power loads such as server boards and fan units within the communication equipment.

[0027] The second output is an auxiliary power supply terminal, used to provide a low-power DC voltage, such as 12V or 3.3V. This auxiliary power supply output is independent of the main power output and is connected to the auxiliary power plane of the backplane PCB. The protection functions of the two outputs are independent of each other. The auxiliary power supply output is configured to continue to provide power to the electromechanical management unit and backplane sensors in the chassis even when the main power output is abnormal, shut down, or current-limited, ensuring the survival of the management system. The electromechanical management unit is hereinafter referred to as the MMU.

[0028] The switching power supply module also includes a monitoring unit and a control enable terminal. The monitoring unit is connected to the power conversion circuit of the switching power supply module and can adjust the main power output current limiting point of the switching power supply module, and can turn the main power output of the switching power supply module off or on. The monitoring unit is interconnected with the management communication bus in the power supply plane via a serial communication interface, which includes, but is not limited to, a CAN interface, an RS485 interface, or an I2C interface. The control enable terminal (e.g., ON / OFF pin) is used to control the on / off state of the module's main power output, and its level state can be directly driven by external hardware signals.

[0029] The backplane PCB is the core carrier for power aggregation within the communication equipment. Due to the compact internal structure of the equipment, the chassis power connectors cannot be directly connected to the busbar; therefore, the power supply current from the power supply battery must be aggregated and carried through the backplane PCB. The backplane PCB is the physical carrier of the power supply plane, through which all chassis within the communication equipment are powered. The load-carrying capacity provided by the power supply plane must be greater than or equal to the sum of the maximum power consumption of all chassis within the communication equipment. When all N switching power supply modules of power input A or power input B are fully configured, the power supply plane can support the maximum power consumption of the communication equipment.

[0030] In practical applications, the power supply plane design of the power supply module is affected by factors such as the size of the backplane PCB, heat dissipation openings, and PCB trace safety regulations. This results in current-carrying bottlenecks in certain areas of the device's backplane PCB, making it impossible to meet the power supply capacity of 2N switching power supply modules connected in parallel. Therefore, the load capacity of the switching power supply module is usually greater than the power consumption required by the communication equipment.

[0031] To monitor the physical condition of the backplane PCB, this embodiment places sensors in specific areas of the backplane PCB, including air vents, current bottlenecks, or near power connectors. Two independent signal paths are arranged on the backplane PCB: The first path is the management bus, and the communication interface of the sensor is connected to the management bus to report the monitoring data to the electromechanical management unit.

[0032] The second path is a control bus, with the sensor's output control signal connected to the hardware protection link. Simultaneously, the power supply module's enable control signal (EN signal) is also connected to the hardware protection link via a connector. Specifically, the hardware protection link is a hardware signal link, not a communication protocol bus. The sensor output and the enable pin are directly electrically connected via the hardware protection link. When the sensor detects that a physical state parameter exceeds a preset threshold, its output control signal directly flips its level on the hardware protection link, thereby changing the level of the enable pin of the power supply module connected to this hardware protection link and shutting down the module's output. This process does not involve the management bus or rely on software instructions from the main control unit, forming a direct hardware protection link.

[0033] The multiple chassis are pluggable and mountable into the service slots of the backplane PCB. Chassis types include main control chassis, service chassis, fan chassis, etc. (See reference...) Figure 3 In addition to the service chips, the communication equipment chassis also includes a 48V input circuit and an electromechanical management unit. The 48V input circuit mainly consists of reverse polarity protection power devices, fuses, EMI filter circuits, power detection circuits, HotSwap circuits, and isolated DC / DC modules.

[0034] The reverse connection protection power device is configured to prevent damage to the chassis caused by reverse power supply connection during debugging; the fuse is configured to quickly remove the chassis from the power supply plane when the parallel devices in the main power supply path of the chassis are short-circuited; the EMI filter circuit mainly consists of a common-mode inductor, X capacitor, and Y capacitor, configured to prevent conducted interference from the isolated DC / DC module in the chassis; the power detection circuit is used to detect the real-time power consumption of the chassis main power supply, and communicates with the electromechanical management unit through the IIC isolation device to report real-time power consumption and other performance values; the hot swap circuit is used to suppress surge current and prevent surge current when the chassis is inserted or powered on from damaging the series devices in the main power supply path of the chassis and the main power voltage jitter in the power supply plane.

[0035] The electromechanical management unit (EMU) is internally composed of a microprocessor chip (such as an MCU) and peripheral circuitry. The EMU is powered by a combined power supply from the isolated DC / DC module and the switching power supply module of the main drive. This power supply method prevents the EMU from remaining active even after the main drive is powered off. The EMU communicates with the EMU master node via a management bus, reporting the real-time power consumption of the drive and controlling the HotSwap circuit to power off the drive.

[0036] The MMU on the main control board acts as the master node of the management bus, responsible for aggregating power consumption data from all boards and output power data from all switching power supply modules. The main control board also houses a communication device control unit, through which the MMU provides the power supply system's performance and alarm status via a northbound communication interface.

[0037] Based on the above architecture, this system includes two parallel protection and control links. The first is a software management link, where the main control unit (MMU) queries the power module status and chassis power consumption via the management bus, executes power consumption comparison logic, and issues current limiting or shutdown commands. This link is used to achieve fine-grained power regulation and remote alarms. The second is a hardware protection link, where backplane sensors are directly connected to the power module enable terminal via hardware wires. When a severe overheating or smoke alarm occurs, and the software management link fails due to a fault (such as bus deadlock or main control unit reset), the hardware protection link can still work independently, physically cutting off the power output to prevent fire.

[0038] Through the above architecture, the communication equipment internally forms a single-plane power pool power supply architecture, which not only realizes the sharing and redundancy of power supply resources, but also solves the problems of difficult monitoring and protection failure of backplane current carrying bottleneck in traditional architecture through dual power supply design and hardware direct connection protection mechanism.

[0039] It should be noted that this embodiment uses a single-plane architecture as an example, but the scope of protection of this application is not limited to this and can also be applied to multi-plane power supply architectures.

[0040] Example 2 Based on the communication equipment power supply protection system architecture described in Embodiment 1, this embodiment provides a communication equipment power supply protection method. This method can be applied to the main control panel electromechanical management unit of communication equipment. Through a dual hardware and software protection mechanism, it identifies backplane PCB anomalies while preventing service interruptions and ensuring the reliability of protection actions. (Refer to...) Figure 2 and Figure 5 , Figure 2 This is a flowchart of the second embodiment of the communication equipment power supply protection method of this application. Figure 5 This is a schematic diagram of a protection process based on sensor monitoring.

[0041] First, initialization and status detection. The communication equipment is powered on, and each electromechanical management unit and the monitoring unit within the switching power supply module are initialized. The main control panel's electromechanical management unit detects the operating status of the switching power supply module and the electromechanical management units within the panel. Once detected, the panel's electromechanical management and the communication and status of the switching power supply module are deemed normal.

[0042] Secondly, power consumption data acquisition and accumulation. The main control board (MMU) queries the power consumption of all boards in real time through the management bus and accumulates it to obtain the total power consumption of the equipment boards (∑P equipment boards); at the same time, it queries the output power of all switching power supply modules and accumulates it to obtain the total output power of the power supply modules (∑P power supply modules).

[0043] Power consumption accumulation record. The main node of the electromechanical management unit in the main control board accumulates the power consumption of all the actual boards inserted in the communication equipment (i.e., fan units, main control board and all its service boards) in real time, and stores the accumulated power consumption value; at the same time, it accumulates the output power of all the switching power supply modules inserted in the communication equipment and operating normally, and stores the accumulated power value.

[0044] Then, anomaly detection and logical calculations are performed. The main control panel's electromechanical management master node performs logical calculations on the ∑P power modules and η×∑P device chassis (η>1, e.g., 1.1). Specifically, a calculation margin η is preset, where η>1, for example, η can be 1.1. If ∑P power modules ≤ η×∑P device chassis, the power supply backplane is determined to be normal, and monitoring continues. If ∑P power modules > η×∑P device chassis, the power supply backplane is initially determined to be abnormal. In this case, excess energy is considered to be supplied to the micro-short circuit point of the power supply backplane.

[0045] Next, the software management link is adjusted. In response to the determination of an anomaly in the backplane PCB power supply plane, the electromechanical management master node within the main control board executes a power output adjustment command via the management bus. Specifically, the outputs of the switching power supply modules are shut down one by one, or the main power output current limit of the switching power supply modules is lowered, so that the module output power is basically the same as the cumulative power consumption of the chassis. In this step, since the auxiliary power output of the switching power supply module is independent of the main power output, and it still supplies power to the electromechanical management unit within the chassis during main power output adjustment, it is not necessary to completely shut down the main power supply of the communication equipment chassis. This allows the electromechanical management unit to remain active, eliminating the problems of communication equipment service interruption and repeated chassis restarts. The adjustment process can be step-by-step, with a preset time window reserved after each adjustment to wait for power stabilization before the next determination, to avoid misjudgments caused by dynamic load changes.

[0046] Finally, the sensor monitoring and hardware protection link is triggered. While performing the aforementioned power consumption comparison, the main control board's electromechanical management master node monitors the performance values ​​or alarm information of the backplane sensors. These sensors are located at the air outlet of the communication equipment's backplane and at the current bottleneck of the power supply backplane, used to monitor physical state parameters such as temperature and smoke. If the sensor values ​​do not exceed a preset threshold and there is no alarm, monitoring continues.

[0047] If the sensor value exceeds a preset threshold or an alarm signal is issued, a dual protection mechanism is triggered: The first path is a software path: the main control unit (MMU) reports a power battery anomaly alarm to the device's network management system and logs it, uniformly issuing a shutdown command for the switching power supply module output, or adjusting the output current limit to the minimum. The second path is a hardware path: the sensor's output control signal acts directly on the enable pin of the switching power supply module through the hardware protection link. When the physical state parameters exceed the preset threshold, the sensor directly changes the enable pin level, quickly and in real-time shutting down the power supply module output. This hardware path does not pass through the management bus, nor does it rely on the main control unit's software commands. Therefore, even if the software management link fails due to a fault (such as a management bus malfunction or communication interruption), it can still promptly limit the switching power supply module's output capability, preventing accelerated deterioration of the device's power battery backplane PCB due to abnormalities.

[0048] Furthermore, alarm linkage and remote processing are implemented. The main control panel (MMU) reports the identified alarm status to the communication equipment control unit, which in turn reports to the network management system. Simultaneously, the control unit within the main control panel drives the red LED status indicator and buzzer on the main control panel to provide local audible and visual alarms. After remote users or maintenance personnel at the control center view the alarm information indicating an abnormal power supply plane in the communication equipment's power supply battery, they can remotely shut down the remaining power supply modules powered by the power supply battery and other boards except the main control panel via the network management system. This prevents multiple power supply modules from continuously supplying power or triggering protection functions and restarting, thus avoiding the continuous supply of energy to the fault point on the communication equipment's backplane PCB and preventing the risk of continued deterioration and fire on the equipment's backplane PCB.

[0049] Using the above method, this embodiment pre-limits the output capacity of the power module and identifies abnormal states for remote alarms. Simultaneously, by reducing the energy supply capacity, the PCB carbonization and degradation time is delayed, facilitating timely handling by maintenance personnel and mitigating the risk of fire. The method utilizes a management bus and dual-power architecture for software regulation and hardware shutdown based on hardware protection links and direct sensor connections; these two mechanisms serve as backups for each other, enhancing the safety of the power supply system.

[0050] Example 3 Reference Figure 6 This application provides an application diagram of remote alarm for communication equipment. In this embodiment, the power supply system for the communication equipment includes not only the power supply system but also the communication equipment that requires power. After communication equipment in different computer rooms and different areas is networked, it can be remotely monitored through a network management system. The network management system can query the alarm information of the equipment and display it on the network management interface; at the same time, the equipment locally provides audible and visual alarms for the alarm information.

[0051] The alarm reporting process specifically includes: the northbound communication interface of the electromechanical management unit of the main control board of the communication equipment, in addition to providing the power supply system performance status to the communication equipment control unit within the main control board, can also provide the alarm status after logical calculation and judgment of the operating data queried from the power supply system. The alarm information identified by the electromechanical management unit is stored locally and then reported.

[0052] Specifically, when the communication equipment control unit in the main control panel receives a report of an abnormality in the power supply plane PCB of the power supply battery, it sends an emergency alarm to the network management system to alert remote users or maintenance personnel in the control center that the power supply plane of the communication equipment power supply battery is abnormal.

[0053] Local audible and visual alarms include: the control unit in the main control panel of the communication equipment drives the red LED status indicator and buzzer on the main control panel to provide audible and visual alarms, so as to remind the local maintenance personnel that there is an abnormality in the power supply plane of the communication equipment power battery.

[0054] When remote users or maintenance personnel at the control center detect alarm information indicating an abnormal power supply plane in the communication equipment's power battery, they can remotely shut down the remaining power supply modules powered by the power battery and other boards except the main control board via the network management system. This prevents multiple power supply modules from continuously supplying power or triggering protection functions and restarting, thus avoiding continuous power supply to the faulty point on the communication equipment's backplane PCB. This prevents the risk of further deterioration and fire on the equipment's backplane PCB. It also delays the time it takes for the backplane PCB to catch fire, allowing maintenance personnel to arrive on-site promptly and ensuring the safety of the communication equipment's power battery supply.

[0055] Example 4 This embodiment provides a power supply protection device for a communication equipment's power battery. This device can be integrated into the main control panel's electromechanical management unit of the communication equipment, or it can exist as a separate control unit. The device includes: The first acquisition module is used to acquire the total output power of the at least two switching power supply modules. In specific implementation, this module reads the voltage and current register values ​​of the power supply modules through the management bus and calculates the total output power.

[0056] The second acquisition module is used to acquire the total power consumption of the multiple chassis. In specific implementation, this module aggregates the power consumption data reported by the MMUs of each chassis through the management bus.

[0057] The judgment module is used to determine that the backplane PCB power supply plane is abnormal if the total output power is greater than the product of the total power consumption and a preset coefficient. This module internally stores the preset coefficient (η>1) and executes the comparison logic.

[0058] The control module is used to adjust the output capability of the switching power supply module in response to an anomaly in the backplane PCB power supply plane, so as to reduce the difference between the total output power and the total power consumption. In specific implementation, this module issues current limiting or shutdown commands through the management bus, or triggers protection through hardware circuitry.

[0059] It should be noted that the device embodiment and the method embodiment (Embodiment 2) described in this embodiment are based on the same inventive concept. Specific implementation details, beneficial effects, and protection scope can be found in the description of the method embodiment, and will not be repeated here. This device can be implemented through software, hardware, or a combination of both. For example, the functions of the above modules can be implemented by a processor executing a program in memory.

[0060] Example 5 This embodiment provides a communication device that includes the hardware architecture described in Embodiment 1 and is configured to execute the protection method described in Embodiment 2.

[0061] Reference Figure 1 and Figure 4 The communication device includes a backplane PCB, at least two switching power supply modules, multiple chassis, a processor, and memory.

[0062] The backplane PCB includes a main power plane, an auxiliary power plane, a management bus, and a control bus.

[0063] At least two switching power supply modules are connected in parallel to the backplane PCB to form a power pool that supplies power to the multiple chassis. The module has a main power output terminal, an auxiliary power output terminal, and a hardware enable pin.

[0064] The multiple chassis are connected to the backplane PCB and draw power from the power supply architecture. An electromechanical management unit is integrated within each chassis.

[0065] The processor and memory are typically located within the main control panel. The memory stores a computer program, and when the processor (e.g., the CPU in the main control panel's MMU) executes the computer program, it implements the steps of the communication device power supply protection method described in Embodiment 2. Specifically, the processor obtains the total output power of the power module and the total power consumption of the chassis through the management bus, executes comparison logic, and adjusts the power module output through the management bus or hardware protection link when an anomaly is detected.

[0066] In addition, the communication device also includes sensors (temperature, smoke) mounted on the backplane PCB. The signal output terminals of the sensors are connected to the control bus and directly connected to the control enable terminal of the switching power supply module to achieve direct hardware connection protection.

[0067] Example 6 This embodiment provides a computer-readable storage medium on which a computer program is stored.

[0068] When the computer program is executed by a processor (e.g., a processor in the main control panel of a communication device), it implements the steps of the communication device power supply protection method described in Embodiment 2.

[0069] The storage medium can be any tangible medium that contains or stores a program that can be used by or in conjunction with an instruction execution system, apparatus, or device. For example, the storage medium includes, but is not limited to, electrical, magnetic, optical, electromagnetic, infrared, or semiconductor systems, apparatus, or devices, or any combination thereof. More specific examples (a non-exhaustive list) include: electrical connections having one or more wires, portable computer disks, hard disks, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM or flash memory), optical fibers, portable compact disk read-only memory (CD-ROM), optical storage devices, magnetic storage devices, or any suitable combination thereof.

[0070] It should be noted that the sequence numbers of the embodiments in this application are for descriptive purposes only and do not represent the superiority or inferiority of the embodiments.

[0071] The terms "comprising" and "having," and any variations thereof, in the specification, claims, and accompanying drawings of this application are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or apparatus that includes a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units not listed, or may optionally include other steps or units inherent to such process, method, product, or apparatus. The terms "first," "second," and "third," etc., are used to distinguish different objects, etc., and do not indicate a sequence, nor do they limit "first," "second," and "third" to different types.

[0072] In the description of the embodiments of this application, terms such as "exemplary," "for example," or "for instance" are used to indicate examples, illustrations, or explanations. Any embodiment or design described as "exemplary," "for example," or "for instance" in the embodiments of this application should not be construed as being more preferred or advantageous than other embodiments or designs. Specifically, the use of terms such as "exemplary," "for example," or "for instance" is intended to present the relevant concepts in a concrete manner.

[0073] In the description of the embodiments of this application, unless otherwise stated, " / " means "or". For example, A / B can mean A or B. The "and / or" in the text is merely a description of the relationship between related objects, indicating that there can be three relationships. For example, A and / or B can mean: A exists alone, A and B exist simultaneously, and B exists alone. In addition, in the description of the embodiments of this application, "multiple" means two or more.

[0074] In some processes described in the embodiments of this application, multiple operations or steps are included in a specific order. However, it should be understood that these operations or steps may not be executed in the order they appear in the embodiments of this application, or they may be executed in parallel. The sequence number of the operation is only used to distinguish different operations, and the sequence number itself does not represent any execution order. In addition, these processes may include more or fewer operations, and these operations or steps may be executed sequentially or in parallel, and these operations or steps may be combined.

[0075] Through the above description of the embodiments, those skilled in the art can clearly understand that the methods of the above embodiments can be implemented by means of software plus necessary general-purpose hardware platforms. Of course, they can also be implemented by hardware, but in many cases the former is a better implementation method. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, can be embodied in the form of a software product. This computer software product is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk) as described above, and includes several instructions to cause a terminal device to execute the methods described in the various embodiments of this application.

[0076] The above are merely preferred embodiments of this application and do not limit the patent scope of this application. Any equivalent structural or procedural transformations made using the content of this application's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this application.

Claims

1. A power supply protection method for a communication device, applied to a communication device, the communication device comprising a backplane PCB, at least two switching power supply modules connected to the backplane PCB, and multiple chassis, wherein the at least two switching power supply modules are connected in parallel to form a power supply pool to supply power to the multiple chassis; characterized in that, include: Obtain the total output power of the at least two switching power supply modules; Obtain the total power consumption of the multiple chassis; If the total output power is greater than the product of the total power consumption and a preset coefficient, it is determined that there is an abnormal risk in the backplane PCB power supply plane, and the output capability of the switching power supply module is adjusted to reduce the difference between the total output power and the total power consumption.

2. The method according to claim 1, characterized in that, The preset coefficient is greater than 1.

3. The method according to claim 1, characterized in that, The switching power supply module provides a main power output terminal and an auxiliary power output terminal; The main power output terminal is connected to the power supply plane of the backplane PCB; The auxiliary power output terminal is independent of the main power output terminal and is used to supply power to the management unit in the chassis so as to maintain the operation of the management unit when the main power output terminal is abnormal.

4. The method according to claim 3, characterized in that, Adjusting the output capability of the switching power supply module includes: One by one, shut down the main power output of the switching power supply module, or lower the current limiting point of the main power output of the switching power supply module; After each adjustment, the judgment step is re-executed. If the abnormality is still determined, the adjustment continues until the main power output of all switching power supply modules is shut down or the output current limiting point is reduced to the minimum.

5. The method according to claim 1, characterized in that, Also includes: The physical state parameters monitored by the sensors set on the backplane PCB are obtained, including temperature or smoke concentration; If the physical state parameters exceed the preset threshold, the backplane PCB power supply plane is determined to be abnormal.

6. The method according to claim 5, characterized in that, The sensor is connected to the control enable terminal of the switching power supply module via a hardware link; the method further includes: When the physical state parameter exceeds a preset threshold, the level of the control enable terminal is directly changed by the sensor to shut down the main power output of the switching power supply module.

7. The method according to claim 1, characterized in that, Also includes: Generate alarm information and report the alarm information to the network management system or drive the local alarm device; Receive a remote shutdown command, and based on the remote shutdown command, shut down some or all of the at least two switching power supply modules and the main control board.

8. A power supply protection device for a communication equipment battery, characterized in that, include: The first acquisition module is used to acquire the total output power of at least two switching power supply modules; The second acquisition module is used to acquire the total power consumption of multiple chassis; The judgment module is used to determine that the backplane PCB power supply plane is abnormal if the total output power is greater than the product of the total power consumption and a preset coefficient. A control module is used to adjust the output capability of the switching power supply module in response to an abnormality in the backplane PCB power supply plane, so as to reduce the difference between the total output power and the total power consumption.

9. A communication device, characterized in that, include: Backplane PCB; At least two switching power supply modules are connected in parallel to the backplane PCB to form a power pool power supply architecture; Multiple chassis are connected to the backplane PCB and obtain power from the power supply architecture. A processor and a memory, the memory storing a computer program, wherein the processor executes the computer program to implement the method as described in any one of claims 1 to 7.

10. A computer-readable storage medium, characterized in that, The storage medium stores a computer program that, when executed by a processor, implements the method as described in any one of claims 1 to 7.

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