Control method, PSE device, power sharing device, power sharing system and storage medium

Abstract

The invention discloses a PSE device control method, a PSE device, a power sharing device control method, a power sharing device and a computer readable storage medium, and relates to the technical field of Ethernet power supply. The method comprises the following steps that: PSE equipment establishes power supply connection with an input / output port of power sharing equipment through a power sharing daughter board; when the power supply of the built-in power supply is normal, the working mode of the PSE equipment is confirmed, and the working mode comprises a power expansion mode and a power sharing mode; under the condition that the PSE is in a power expansion mode, the mainboard can receive power supply from the built-in power supply and the power sharing equipment through the power sharing daughter board; and under the condition that the PSE equipment is in the power sharing mode, the built-in power supply can transmit power to the power sharing equipment through the power sharing daughter board. According to the invention, power allocation can be carried out on the PSE equipment, and various application scenes of multi-PSE equipment networking can be better coped with.

Description

Technical Field

[0001] This application relates to the field of Power over Ethernet (PoE) technology, and more specifically, to a control method for a PSE device, a PSE device, a control method for a power sharing device, a power sharing device, a power sharing system, and a computer-readable storage medium. Background Technology

[0002] PoE (Power Over Ethernet) is a technology that transmits data and provides DC power to powered devices (PDs) via power supply equipment (PSEs) over standard Ethernet cables. However, PSEs have limited output power due to constraints such as internal space, heat dissipation, and cost, making them unsuitable for various application scenarios involving multiple PSEs with high power demands from PDs or dynamically changing network conditions. To address this issue, PSEs supporting pluggable power modules have emerged, enabling power expansion and power allocation between different PSEs. However, this solution is also limited by the internal space and heat dissipation constraints of the PSE, preventing the unlimited stacking of pluggable power modules. Furthermore, power allocation between different PSEs requires manual operation, resulting in coarse and inflexible power distribution granularity. Summary of the Invention

[0003] This application provides a control method for a PSE device, a control method for a PSE device, a power sharing device, a power sharing device, and a computer-readable storage medium. It can switch between a power extension mode and a power sharing mode to extend the output power of the PSE device to meet the energy demand of the PD device, and to deliver power to the power sharing device when there is excess power, so that the power sharing device can distribute it to other PSE devices in the power sharing mode for efficient energy utilization. It realizes automated and flexible scheduling, and the power can be precisely allocated with small granularity, which can better cope with various application scenarios of multi-PSE device networking.

[0004] This application discloses a control method for a Power Shared Equipment (PSE) device. The PSE device is connected to the input / output ports of a power-sharing device. The PSE device includes a motherboard, a power-sharing daughterboard, and a built-in power supply. The control method includes: establishing a power supply connection between the PSE device and the input / output ports of the power-sharing device via the power-sharing daughterboard; confirming the operating mode of the PSE device when the built-in power supply is normal, the operating mode including a power extension mode and a power-sharing mode; when the PSE device is in the power extension mode, the motherboard can receive power from the built-in power supply and the power-sharing device via the power-sharing daughterboard; and when the PSE device is in the power-sharing mode, the built-in power supply can transmit power to the power-sharing device via the power-sharing daughterboard.

[0005] In some implementations, the operating mode further includes a redundancy mode, and the control method further includes: when the built-in power supply is abnormal, the PSE device enters the redundancy mode, and in the redundancy mode, the motherboard receives power from the power sharing device through the power sharing daughterboard.

[0006] In some embodiments, the redundant mode further includes: detecting whether the power supply status of the built-in power supply has changed; when the built-in power supply changes to normal power supply, entering the step of confirming the working mode of the PSE device; and, when the built-in power supply is still abnormal, maintaining the redundant mode.

[0007] In some embodiments, confirming the operating mode of the PSE device when the built-in power supply is normal includes: confirming that the operating mode of the PSE device is the power extension mode when the rated power P1 of the built-in power supply is less than the external power supply budget PoE_budget of the PSE device; and confirming that the operating mode of the PSE device is the power sharing mode when the rated power P1 of the built-in power supply is greater than the external power supply budget PoE_budget of the PSE device, and the difference between the rated power P1 and the external power supply budget PoE_budget is greater than a preset first threshold.

[0008] In some implementations, the power extension mode further includes: the power sharing subboard obtaining the supplementary power P_request required by the PSE device based on the rated power P1 and the external power supply budget PoE_budget, and sending the supplementary power P_request to the power sharing device; the power sharing subboard receiving the maximum power P_limit that its corresponding input / output port can provide, fed back by the power sharing device; if the maximum power P_limit is greater than the supplementary power P_request, the power sharing subboard maintains the power extension ready state; and when the total power consumption Pall of the PD devices connected to the PSE device exceeds the rated power P1, the motherboard receives the power supplied by the power sharing device and the rated power P1 supplied by the built-in power supply through the power sharing subboard.

[0009] In some implementations, the power extension mode further includes: when the total power consumption Pall of the PD devices connected to the PSE device becomes less than or equal to the rated power P1, the motherboard changes to receive power supplied by the built-in power supply through the power sharing subboard; and when the total power consumption Pall of the PD devices connected to the PSE device is greater than the external power supply budget PoE_budget, the motherboard controls the disconnection of power supply to some of the PD devices.

[0010] In some implementations, the power extension mode further includes: if the maximum power P_limit is less than the supplementary power P_request, the motherboard receives an adjustment notification sent by the power sharing device through the power sharing daughterboard; and the motherboard responds to the adjustment notification by adjusting the external power supply budget PoE_budget to a value no greater than (P_limit + P1).

[0011] In some embodiments, the power extension mode further includes: detecting whether the power supply status of the built-in power supply is normal; when the built-in power supply is normal, detecting whether the external power supply power budget PoE_budget has changed; when the external power supply power budget PoE_budget has not changed, the power sharing daughterboard maintains the power extension ready state; when the external power supply power budget PoE_budget has changed, returning to the step of confirming the working mode of the PSE device; and when the built-in power supply is abnormal, returning the PSE device to enter the redundancy mode.

[0012] In some embodiments, the PSE device further includes an output switch. In the power-sharing mode, the control method further includes: the power-sharing subboard obtaining the remaining power P_surplus of the PSE device based on the rated power P1 and the external power supply budget PoE_budget, and sending the remaining power P_surplus to the power-sharing device; and, when the input voltage output by the PSE device to the corresponding input / output port meets a preset range, the power-sharing subboard controls the output switch to open, outputting part or all of the remaining power P_surplus generated by the built-in power supply to the power-sharing device to perform power sharing.

[0013] In some implementations, the power sharing mode further includes: the power sharing subboard monitoring its output power Pout in real time; and when the difference between the remaining power P_surplus and the output power Pout is less than a preset second threshold, the power sharing subboard controls the output switch to turn off and stop power sharing.

[0014] In some embodiments, the power-sharing mode further includes: when the difference between the remaining power P_surplus and the output power Pout is greater than the second threshold, or during the power-sharing process, detecting whether the power supply status of the built-in power supply is normal; when the built-in power supply is normal, detecting whether the external power supply budget PoE_budget has changed; when the external power supply budget PoE_budget has not changed, maintaining the power-sharing subboard controlling the output switch to be on, outputting part or all of the remaining power P_surplus generated by the built-in power supply to the power-sharing device to perform the power-sharing step; when the external power supply budget PoE_budget has changed, returning to the step of confirming the working mode of the PSE device; and when the built-in power supply is abnormal, returning the PSE device to enter the redundancy mode.

[0015] In some implementations, the PSE device establishes a power supply connection with an input / output port of the power sharing device through the power sharing sub-board, including: after the power sharing sub-board receives a standby voltage Vstandby provided by the power sharing device through its shared power input / output port, the system control module of the power sharing sub-board starts and completes initialization; the power sharing sub-board sends a power-on request to the power sharing device; after the power sharing device responds to the power-on request and turns on the power supply, the power sharing sub-board receives the initial output voltage Vout1, the initial output current Iout1, and the port rated power P_rated sampled and sent by the power sharing device; the power sharing... The control module of the power sharing sub-board acquires the input voltage Vin1 and input current Iin1 at the input / output port of the shared power supply; based on the initial output voltage Vout1, the initial output current Iout1, the port rated power P_rated, the input voltage Vin1, and the input current Iin1, the power sharing sub-board performs voltage matching; the PSE device sends its own redundant power requirement P_redundancy to the power sharing device so that the power sharing device performs power matching; and, after successful voltage matching and receiving feedback from the power sharing device confirming successful power matching, the power sharing sub-board controls its input switch to turn on, completing the establishment of the power supply connection.

[0016] In some implementations, the step of the power-sharing daughterboard performing voltage matching based on the initial output voltage Vout1, the initial output current Iout1, the port rated power P_rated, the input voltage Vin1, and the input current Iin1 includes: obtaining a target output voltage Vout2 based on the initial output voltage Vout1, the input voltage Vin1, the input current Iin1, and the port rated power P_rated; and if the target output voltage Vout2 is within the acceptable input voltage range [Vpse1, Vpse2] of the PSE device, requesting the power-sharing device to adjust its output voltage to Vout2, and confirming successful voltage matching.

[0017] This application also provides a PSE device. The PSE device includes a motherboard, an internal power supply, and a power-sharing sub-board. The internal power supply is connected to the power-sharing sub-board, and the motherboard is connected to the power-sharing sub-board. The power-sharing sub-board is configured to: establish a power supply connection with an input / output port of the power-sharing device; when the internal power supply is functioning normally, confirm the operating mode of the PSE device, the operating mode including a power extension mode and a power-sharing mode; when the PSE device is in the power extension mode, enable the motherboard to receive power from the internal power supply and the power-sharing device through the power-sharing sub-board; and when the PSE device is in the power-sharing mode, enable the internal power supply to transmit power to the power-sharing device through the power-sharing sub-board.

[0018] In some implementations, the operating mode further includes a redundancy mode. The power-sharing daughterboard is also configured to enter the redundancy mode when the built-in power supply fails, in which the motherboard receives power from the power-sharing device.

[0019] In some implementations, in the redundancy mode, the power sharing subboard is further configured to: detect whether the power supply status of the built-in power supply has changed; when the built-in power supply changes to normal power supply, reconfirm the operating mode of the PSE device; and, when the built-in power supply is still abnormal, remain in the redundancy mode.

[0020] In some implementations, the power-sharing subboard is configured to: when the rated power P1 of the built-in power supply is less than the external power supply budget PoE_budget of the PSE device, the operating mode of the PSE device is the power extension mode; and when the rated power P1 of the built-in power supply is greater than the external power supply budget PoE_budget of the PSE device, and the difference between the rated power P1 and the external power supply budget PoE_budget is greater than a preset first threshold, confirm that the operating mode of the PSE device is the power-sharing mode.

[0021] In some implementations, in the power extension mode, the power sharing daughterboard is further configured to: obtain the supplementary power P_request required by the PSE device based on the rated power P1 and the external power supply budget PoE_budget, and send the supplementary power P_request to the power sharing device; receive the maximum power P_limit that the corresponding input / output port can provide, fed back by the power sharing device; if the maximum power P_limit is greater than the supplementary power P_request, maintain the power extension ready state; and, when the total power consumption Pall of the PD devices connected to the PSE device exceeds the rated power P1, cause the motherboard to receive the power supplied by the power sharing device and the rated power P1 supplied by the built-in power supply through the power sharing daughterboard.

[0022] In some implementations, in the power extension mode, the power sharing subboard is further configured to: when the total power consumption Pall of the PD devices connected to the PSE device becomes less than or equal to the rated power P1, cause the mainboard to switch to receiving power supplied by the built-in power supply through the power sharing subboard; the mainboard is configured to: when the total power consumption Pall of the PD devices connected to the PSE device is greater than the external power supply budget PoE_budget, control the cutting off of power supply to some of the PD devices.

[0023] In some implementations, in the power extension mode, the motherboard is further configured to: if the maximum power P_limit is less than the supplementary power P_request, receive an adjustment notification from the power sharing device through the power sharing subboard, and in response to the adjustment notification, adjust the external power supply budget PoE_budget to a value no greater than (P_limit + P1).

[0024] In some implementations, in power extension mode, the power sharing daughterboard is further configured to: detect whether the power supply status of the built-in power supply is normal; when the built-in power supply is normal, detect whether the external power supply power budget PoE_budget has changed; when the external power supply power budget PoE_budget has not changed, maintain the power extension ready state; when the external power supply power budget PoE_budget has changed, confirm the operating mode of the PSE device; and when the built-in power supply is abnormal, the PSE device enters the redundancy mode.

[0025] In some embodiments, the power-sharing subboard further includes an output switch. In power-sharing mode, the power-sharing subboard is further configured to: obtain the remaining power P_surplus based on the rated power P1 and the external power supply budget PoE_budget, and send P_surplus to the power-sharing device; and, when the voltage output to the power-sharing device meets a preset range, control the output switch to open, and output part or all of the P_surplus generated by the built-in power supply to the power-sharing device to perform power sharing.

[0026] In some implementations, in the power sharing mode, the power sharing subboard is further configured to: monitor its output power Pout in real time; and, when the difference between the remaining power P_surplus and the output power Pout is less than a preset second threshold, control the output switch to turn off and stop power sharing.

[0027] In some implementations, in the power-sharing mode, the power-sharing subboard is further configured to: detect whether the power supply status of the built-in power supply is normal when the difference between the remaining power P_surplus and the output power Pout is greater than the second threshold, or during the power-sharing process; detect whether the external power supply budget PoE_budget has changed when the built-in power supply is normal; maintain the PSE device in the power-sharing mode when the external power supply budget PoE_budget has not changed; reconfirm the operating mode of the PSE device when the external power supply budget PoE_budget has changed; and enter the redundancy mode when the built-in power supply is abnormal.

[0028] In some implementations, the power-sharing subboard is configured to: upon receiving a standby voltage Vstandby from the power-sharing device via its shared power input / output port, the control module of the power-sharing subboard starts and completes initialization; sends a power-on request to the power-sharing device; after the power-sharing device responds to the power-on request and turns on the power supply, it receives the initial output voltage Vout1, initial output current Iout1, and port rated power P_rated sampled and sent by the power-sharing device; acquires the input voltage Vin1 and input current Iin1 at the shared power input / output port; performs voltage matching based on the initial output voltage Vout1, the initial output current Iout1, the port rated power P_rated, the input voltage Vin1, and the input current Iin1; sends its own redundant power requirement P_redundancy to the power-sharing device so that the power-sharing device performs power matching; and, upon successful voltage matching and receiving feedback from the power-sharing device confirming successful power matching, controls its input switch to turn on, completing the establishment of the power supply connection.

[0029] In some implementations, the power sharing subboard is configured to: obtain a target output voltage Vout2 based on the initial output voltage Vout1, the input voltage Vin1, the input current Iin1, and the port rated power P_rated; and if the target output voltage Vout2 is within the acceptable input voltage range [Vpse1, Vpse2] of the PSE device, request the power sharing device to adjust its output voltage to Vout2 and confirm successful voltage matching.

[0030] This application also provides a control method for a power-sharing device, characterized in that the power-sharing device includes multiple input / output ports; the control method includes: establishing a power supply connection with the PSE device through the input / output ports, the PSE device including a motherboard, a power-sharing daughterboard, and a built-in power supply, the PSE device having operating modes including a power extension mode and a power-sharing mode; when the PSE device is in the power extension mode, the power-sharing device can supply power to the motherboard through the power-sharing daughterboard, so as to combine the power supply to the motherboard by the built-in power supply; and when the PSE device is in the power-sharing mode, the power-sharing device can receive power transmitted by the built-in power supply through the power-sharing daughterboard.

[0031] In some embodiments, the operating mode of the PSE device also includes a redundancy mode. The control method further includes: when the built-in power supply fails and the PSE device is in the redundancy mode, the power-sharing device supplies power to the main board through the power-sharing daughterboard.

[0032] In some implementations, when the PSE device is in the redundant mode, the method further includes: continuously communicating with the PSE device through the input / output port to obtain the power supply status of the built-in power supply monitored by the power sharing subboard; and, when the built-in power supply is still abnormal, the power sharing device continues to supply power to the motherboard through the power sharing subboard.

[0033] In some embodiments, when the PSE device is in the power extension mode, the method further includes: receiving supplementary power P_request sent by the power sharing subboard; providing feedback on the maximum power P_limit that the input / output port connected to the power sharing subboard can provide; if the maximum power P_limit is greater than the supplementary power P_request, then the power sharing device is in a power extension ready state; and when the total power consumption Pall of the PD devices connected to the PSE device exceeds the rated power P1 of the built-in power supply, the power sharing device supplies power to the main board through the power sharing subboard to combine with the rated power P1 supplied by the built-in power supply through the power sharing subboard.

[0034] In some implementations, when the PSE device is in the power extension mode, the method further includes: if the maximum power P_limit is less than the supplementary power P_request, the power sharing device sends an adjustment notification to the main board through the power sharing daughterboard, so that the main board responds to the adjustment notification and adjusts the external power budget PoE_budget of the PSE device to a value not greater than (P_limit + P1).

[0035] In some embodiments, when the PSE device is in the power-sharing mode, the control method further includes: the power-sharing device receiving the remaining power P_surplus of the PSE device sent by the power-sharing subboard; and, when the input voltage of the input / output port meets a preset range, the power-sharing device receiving part or all of the remaining power P_surplus generated by the built-in power supply through the power-sharing subboard to perform power sharing.

[0036] In some implementations, when the PSE device is in the power sharing mode, the method further includes: when the difference between the remaining power P_surplus and the output power Pout of the power sharing sub-board is less than a preset second threshold, the power sharing device stops power sharing.

[0037] In some implementations, establishing a power supply connection with the PSE device via the input / output port includes: the power sharing device providing a standby voltage Vstandby to the power sharing daughterboard via the input / output port; the power sharing device receiving a power-on request from the power sharing daughterboard; the power sharing device responding to the power-on request and turning on the power supply; the power sharing device sampling and sending an initial output voltage Vout1, an initial output current Iout1, and a port rated power P_rated to the power sharing daughterboard; the power sharing device receiving its own redundancy power requirement P_redundancy from the PSE device; when the redundancy power P_redundancy is less than the maximum power P_limit of the corresponding input / output port, confirming successful power matching and sending a success message to the power sharing daughterboard; when the redundancy power P_redundancy is greater than or equal to the maximum power P_limit of the corresponding input / output port, notifying the adjustment of the maximum power P_limit of the input / output port; and, after successful voltage matching and the power sharing device sending a successful power matching feedback to the power sharing daughterboard, the establishment of the power supply connection is completed.

[0038] This application also provides a power-sharing device, which includes a system control module and multiple input / output ports. The system control module is configured to establish a power connection with a PSE device through the input / output ports; when the PSE device is in power extension mode, the system control module is configured to control the supply of power to the motherboard of the PSE device through the input / output ports, so as to merge with the power supply of the PSE device's built-in power supply; when the PSE device is in power-sharing mode, the system control module is configured to control the reception of power transmitted from the PSE device's built-in power supply through the input / output ports.

[0039] In some embodiments, the system control module is further configured to: when the built-in power supply of the PSE device is abnormal and the PSE device is in redundant mode, control the power supply to the motherboard of the PSE device through the input / output port.

[0040] In some embodiments, the system control module is further configured to: continuously communicate with the PSE device through the input / output port when the PSE device is in redundant mode, to monitor whether the power supply status of the built-in power supply changes, and to confirm whether to maintain the redundant mode and maintain the power supply ready state; and, when the built-in power supply is still abnormal, control the power to be supplied to the motherboard of the PSE device through the input / output port.

[0041] In some embodiments, the system control module is further configured to: receive a supplementary power P_request sent by the power sharing subboard of the PSE device when the PSE device is in power extension mode; provide feedback on the maximum power P_limit that the input / output port connected to the power sharing subboard can provide; if the maximum power P_limit is greater than the supplementary power P_request, control the power sharing device to enter the power extension ready state; and, when the total power consumption Pall of the PD device connected to the PSE device exceeds the rated power P1 of the built-in power supply, control the power to be supplied to the motherboard through the input / output port.

[0042] In some implementations, the system control module is further configured to: if the maximum power P_limit is less than the supplementary power P_request, control the sending of an adjustment notification to the motherboard through the input / output port, so that the motherboard responds to the adjustment notification and adjusts the external power supply budget PoE_budget of the PSE device to a value not greater than (P_limit + P1).

[0043] In some embodiments, the system control module is further configured to: receive the remaining power P_surplus of the PSE device sent by the power sharing sub-board of the PSE device when the PSE device is in power sharing mode; and control the receiving of part or all of the remaining power P_surplus generated by the built-in power supply through the input / output port when the input voltage of the input / output port connected to the power sharing sub-board meets a preset range.

[0044] In some embodiments, the system control module is further configured to control the cessation of power sharing when the difference between the remaining power P_surplus and the output power Pout of the power sharing sub-board is less than a preset second threshold.

[0045] In some implementations, the system control module is configured to: control the supply of a standby voltage Vstandby to the power sharing sub-board via an input / output port; receive a power-on request from the power sharing sub-board; respond to the power-on request and control the power supply to be turned on, control the sampling and sending of the initial output voltage Vout1, the initial output current Iout1, and the port rated power P_rated to the power sharing sub-board; receive the redundant power requirement P_redundancy sent by the PSE device; when the redundant power P_redundancy is less than the maximum power P_limit of the corresponding input / output port, confirm successful power matching and control the feedback of success information to the power sharing sub-board; when the redundant power P_redundancy is greater than or equal to the maximum power P_limit of the corresponding input / output port, control the notification to adjust the maximum power P_limit of the input / output port; and, after successful voltage matching and sending feedback of successful power matching to the power sharing sub-board, complete the establishment of the power supply connection.

[0046] In some embodiments, the power-sharing device further includes multiple power modules, each power module including a first voltage output terminal, a second voltage output terminal, and a Data signal interface. The first voltage output terminal is configured to directly output a first DC voltage after being powered on by an external AC power supply. The second voltage output terminal is configured to output a second DC voltage, the voltage of which is higher than the voltage of the first DC voltage. The Data signal interface is configured to output a Present signal, a PowerGood signal, and a communication signal. The Present signal indicates the connection status of the power module, and the PowerGood signal indicates the power supply status of the power module. The system control module communicates with the power modules via the communication signal to control the opening and closing of the first DC voltage output terminal and / or the second DC voltage output terminal.

[0047] In some embodiments, the power-sharing device further includes a first voltage combining module and a second voltage combining module. The first voltage combining module is configured to combine a first DC voltage input to each of the power modules and supply it to each of the input / output ports. The second voltage combining module is configured to combine a second DC voltage input to each of the power modules and supply it to each of the input / output ports respectively.

[0048] In some embodiments, each of the input / output ports is provided with an input buck-boost module. The input buck-boost module is configured to boost or buck the input voltage of the PSE device so that the input voltage conforms to the voltage range of the second voltage combiner module.

[0049] In some implementations, each of the input / output ports is provided with an input control module, which is configured to control the on / off state of the input power path.

[0050] In some implementations, each of the input / output ports is provided with an input protection module, which is configured to cut off the input power path when an input overvoltage or overcurrent is detected.

[0051] In some implementations, each of the input / output ports is provided with an input sampling module, which is configured to monitor the input voltage and input current.

[0052] In some embodiments, each of the input / output ports is provided with an output buck-boost module. The output buck-boost module is configured to boost or buck the output voltage of the power-sharing device so that the output voltage of the power-sharing device matches the input voltage range of the PSE device.

[0053] In some implementations, each of the input / output ports is provided with an output control module, which is configured to control the on / off state of the output power path.

[0054] In some implementations, each of the input / output ports is provided with an output protection module, which is configured to cut off the output power path when an overvoltage or short circuit is detected in the downstream PSE device.

[0055] In some implementations, each of the input / output ports is provided with a reverse protection module, which is configured to prevent current backflow on the output power path.

[0056] In some implementations, each of the input / output ports is provided with an output sampling module, which is configured to monitor the output voltage and output current.

[0057] In some embodiments, the power sharing device further includes a management interface configured to receive user configuration information, which includes at least one of port output priority, port enable, port maximum power, total output power limit, and power module redundancy mode. The system control module receives the user configuration information through the management interface.

[0058] In some implementations, the power module redundancy mode is an n = n1 + n2 mode, where n is the total number of connected power modules, n1 is the number of main power supply modules, and n2 is the number of redundant power supply modules. The system control module is further configured to: receive the power module redundancy mode configuration set by the user through the management interface; control the output power of the n1 main power supply modules during normal operation and set a total output power limit P_Totallimit; when m of the n1 main power supply modules are detected to have failed, control at least min(m, n2) of the n2 redundant power supply modules to intervene and supply power; and, after the redundant power supply modules intervene and supply power, recalculate and set the total output power limit P_Totallimit based on the number of currently operating power modules.

[0059] In some embodiments, the system control module is further configured to: in the power module redundancy mode, by default set the total output power limit P_Totallimit to the sum of the rated power of n1 main power supply modules; when m out of n1 main power supply modules are detected to have failed and m≤n2, maintain the total output power limit P_Totallimit unchanged; and when m out of n1 main power supply modules are detected to have failed and m>n2, adjust the total output power limit P_Totallimit to the sum of the rated power of (n1-m+n2) normally operating power supply modules.

[0060] In some embodiments, the system control module is further configured to: receive a user-set total output power limit P_Totallimit through the management interface, and ensure that P_Totallimit ≤ total system input power P_Totalin, wherein the total system input power P_Totalin is the sum of the rated power of each power module plus the shared power received from the PSE device; under the default configuration, set the total output power limit P_Totallimit to the sum of the rated power of each power module; and monitor the actual total output power in real time, and when the actual total output power approaches or exceeds the total system input power P_Totallimit, sequentially shut down the output of low-priority ports according to preset port priorities.

[0061] In some implementations, the system control module is further configured to, under the default configuration, set the power module redundancy mode to not retain redundant power supply modules.

[0062] In some embodiments, the power sharing device further includes a gating module configured to switch communication paths between the system control module and the power module and the PSE devices connected to each of the input / output ports.

[0063] This application also provides a power sharing system. The power sharing system includes the PSE device described in any of the above embodiments, or the power sharing device described in any of the above embodiments.

[0064] This application also provides a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the control method described in any of the above embodiments.

[0065] In the control method for the PSE device, the PSE device itself, the control method for the power-sharing device, the power-sharing device, the power-sharing system, and the computer-readable storage medium provided in this application, the PSE device establishes a power supply connection with the input / output ports of the power-sharing device through a power-sharing daughterboard. The PSE device and the power-sharing device can communicate and transmit current bidirectionally. With the PSE device's built-in power supply functioning normally, it is confirmed whether the PSE device's operating mode is either power extension mode or power-sharing mode. When the PSE device is in power extension mode, the PSE device's motherboard can receive power from both the built-in power supply and the power-sharing device through the power-sharing daughterboard. When the PSE device is in power-sharing mode, the PSE device's built-in power supply can transmit power to the power-sharing device through the power-sharing daughterboard, allowing the power-sharing device to distribute this power. At this time, the PSE device can receive power from the power sharing device to meet the energy demand of the PD device when the output power is insufficient, and can deliver power to the power sharing device when there is excess power, so that the power sharing device can distribute it to other PSE devices in power sharing mode for efficient energy utilization. This realizes automatic and flexible scheduling, and the power can be precisely allocated with small granularity, which can better cope with various application scenarios of multi-PSE device networking.

[0066] Additional aspects and advantages of embodiments of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of embodiments of this application. Attached Figure Description

[0067] The above and / or additional aspects and advantages of this application will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, wherein:

[0068] Figure 1 This is a flowchart illustrating the control method of a PSE device according to some embodiments of this application;

[0069] Figure 2 This is a schematic diagram of the structure of a PSE device according to some embodiments of this application;

[0070] Figure 3 This is a schematic diagram of the power sharing system according to some embodiments of this application;

[0071] Figure 4 This is a flowchart illustrating the control method of a PSE device according to some embodiments of this application;

[0072] Figure 5 This is a flowchart illustrating the control method of a PSE device according to some embodiments of this application;

[0073] Figure 6 This is a flowchart illustrating the control method of a PSE device in some embodiments of this application, where the operating mode of the PSE device is confirmed when the built-in power supply is normal. The operating modes include power extension mode and power sharing mode.

[0074] Figure 7 This is a flowchart illustrating the control method of a PSE device according to some embodiments of this application;

[0075] Figure 8 This is a flowchart illustrating the control method of a PSE device according to some embodiments of this application;

[0076] Figure 9 This is a flowchart illustrating the control method of a PSE device according to certain embodiments of this application;

[0077] Figure 10 This is a flowchart illustrating the control method of a PSE device according to certain embodiments of this application;

[0078] Figure 11 This is a flowchart illustrating the control method of a PSE device according to certain embodiments of this application;

[0079] Figure 12 This is a flowchart illustrating the control method of a PSE device according to certain embodiments of this application;

[0080] Figure 13 This is a flowchart illustrating the control method of a PSE device according to certain embodiments of this application;

[0081] Figure 14 This is a flowchart illustrating the control method of a PSE device according to certain embodiments of this application;

[0082] Figure 15 This is a schematic diagram of the process of voltage matching performed by the power sharing sub-board based on the initial output voltage Vout1, initial output current Iout1, port rated power P_rated, input voltage Vin1, and input current Iin1 in the control method of the PSE device of some embodiments of this application.

[0083] Figure 16 This is a flowchart illustrating the control method of a power-sharing device according to certain embodiments of this application;

[0084] Figure 17 This is a schematic diagram of the power sharing system according to some embodiments of this application;

[0085] Figure 18 This is a schematic diagram of the power sharing system according to some embodiments of this application;

[0086] Figure 19 This is a flowchart illustrating the control method of a power-sharing device according to certain embodiments of this application;

[0087] Figure 20 This is a flowchart illustrating the control method of a power-sharing device according to certain embodiments of this application;

[0088] Figure 21 This is a flowchart illustrating the control method of a power-sharing device according to certain embodiments of this application;

[0089] Figure 22 This is a flowchart illustrating the control method of a power-sharing device according to certain embodiments of this application;

[0090] Figure 23 This is a flowchart illustrating the control method of a power-sharing device according to certain embodiments of this application;

[0091] Figure 24 This is a flowchart illustrating the control method of a power-sharing device according to certain embodiments of this application;

[0092] Figure 25 This is a flowchart illustrating the control method of a power-sharing device according to certain embodiments of this application;

[0093] Figure 26 This is a schematic diagram illustrating the connection state of a computer-readable storage medium and a processor according to some embodiments of this application.

[0094] Explanation of key component symbols:

[0095] Power sharing system 1000;

[0096] 100 PSE devices; 10 motherboards; 30 built-in power supplies; 50 power-sharing daughterboards;

[0097] Power sharing device 300; system control module 310; input / output port 320; power supply module 330; first voltage combiner module 340; second voltage combiner module 350; management interface 360; gating module 370. Detailed Implementation

[0098] The embodiments of this application are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the embodiments of this application, and should not be construed as limiting the embodiments of this application.

[0099] PoE (Power over Ethernet) is a technology that uses standard Ethernet lines to provide DC power to terminal devices while transmitting data signals. The power supply equipment (PSE) is responsible for injecting and managing power, typically a network switch or power module; while the powered device (PD) is the terminal device that receives and uses this power, such as a network camera, wireless access point, or IP phone. The two are connected via conventional Ethernet cables, enabling power transmission while data communication is achieved. This technology effectively simplifies the cabling structure of terminal devices, reduces deployment and maintenance costs, and is widely used in network cameras, wireless access points, IP phones, and other devices. However, traditional PSE devices are limited by their internal physical structure, heat dissipation capacity, and manufacturing costs, resulting in a clear upper limit on the overall output power. In application scenarios with multiple PSE devices, where the power requirements of PD devices are high or the number of connected devices fluctuates dynamically, such as in densely deployed intelligent building systems, some PSE devices may have insufficient output power while others have excessive output power, failing to meet the overall power demand. In response to this situation, PSE devices supporting pluggable power modules have emerged in the industry. These devices, in addition to the basic power supply unit, reserve modular expansion interfaces, allowing users to configure pluggable power modules according to actual needs. This enables power expansion of the PSE device and power allocation between different PSE devices. This mechanism allows for a certain degree of power allocation between different PSE devices, providing temporary supplementation for devices with localized power shortages, thereby optimizing the overall system's power utilization. However, the modular expansion solution still has significant limitations. First, the internal space of the PSE device is limited, and there is a theoretical upper limit to the number of pluggable power modules. Excessive stacking of modules will cause heat dissipation difficulties, affecting the long-term stability of the device. Second, power allocation between multiple PSE devices usually relies on manual configuration, which is slow to respond and has a coarse allocation granularity, making it difficult to achieve precise and dynamic power scheduling. To solve this problem, this application provides a control method for PSE devices (such as...). Figure 1 , Figures 4 to 15 As shown), PSE equipment 100 (such as Figure 2 , Figure 3 , Figure 17 and Figure 18 (as shown), control methods for power-sharing devices (such as...) Figure 16 , Figure 19 As shown in Figure 25), power sharing device 300 (e.g. Figure 2 , Figure 3 , Figure 17 and Figure 18 As shown), power sharing system 1000 (e.g.) Figure 3 , Figure 17 and Figure 18 (as shown) and computer-readable storage media (such as Figure 26 (As shown).

[0100] Please refer to Figure 1 This application describes a control method for a PSE device. The PSE device 100 is connected to the input / output port 320 of the power sharing device 300. The PSE device 100 includes a main board 10, a power sharing sub-board 50, and a built-in power supply 30. The control method includes:

[0101] 01: PSE device 100 establishes a power supply connection with one input / output port 320 of power sharing device 300 through power sharing daughterboard 50;

[0102] 03: When the built-in power supply 30 is supplying power normally, confirm the working mode of PSE device 100. The working modes include power extension mode and power sharing mode.

[0103] 05: When the PSE device 100 is in power extension mode, the motherboard 10 can receive power from the built-in power supply 30 and the power sharing device 300 through the power sharing daughterboard 50; and

[0104] 07: When the PSE device 100 is in power-sharing mode, the built-in power supply 30 can transmit power to the power-sharing device 300 through the power-sharing sub-board 50.

[0105] Please refer to Figure 2 and Figure 3The control method for the PSE device described above can be applied to the PSE device 100. The PSE device 100 in this embodiment includes a motherboard 10, a built-in power supply 30, and a power-sharing sub-board 50. The built-in power supply 30 is connected to the power-sharing sub-board 50, and the motherboard 10 is also connected to the power-sharing sub-board 50. The power-sharing sub-board 50 is configured to: establish a power supply connection with an input / output port 320 of the power-sharing device 300; when the built-in power supply 30 is functioning normally, confirm the operating mode of the PSE device 100, including a power extension mode and a power-sharing mode; when the PSE device 100 is in power extension mode, enable the motherboard 10 to receive power from the built-in power supply 30 and the power-sharing device 300 through the power-sharing sub-board 50; and when the PSE device 100 is in power-sharing mode, enable the built-in power supply 30 to transmit power to the power-sharing device 300 through the power-sharing sub-board 50.

[0106] Specifically, in this application, the PSE device 100 is a device used in the PoE system for both data transmission and power supply. The PSE device 100 can perform detection, identification, and classification of PD devices, i.e., conduct handshake negotiation to ensure that power supply and communication are only performed with PD devices that conform to Power over Ethernet protocols (such as IEEE .at protocol) at the appropriate power levels, ensuring intelligent, efficient, and secure power transmission over the network. Simultaneously, the PSE device 100 also has power management functions, continuously monitoring actual power consumption to ensure stable power supply to the PD devices.

[0107] The motherboard 10 is the module in the PSE device 100 used to implement system functions, mainly responsible for system service functions such as data communication and forwarding. It includes the PSE module, which receives power from the motherboard 10. The PSE module is used to power and control the PD devices connected to the PSE device 100. The built-in power supply 30 is the structure in the PSE device 100 used to provide the energy source. The built-in power supply 30 is connected to AC as an input to serve as the basic power supply for the PSE device 100 itself and provides PoE voltage (e.g., ...). Figure 3 The VPoE-1 output (typically 50-57V) is sent to the power sharing daughterboard 50 to power the PSE device 100. The power sharing daughterboard 50 is the structure in the PSE device 100 used to implement power distribution and sharing functions. The power sharing daughterboard 50 is electrically connected to the main board 10 and the built-in power supply 30, and controls the PSE device 100 by running or loading instructions stored in a memory (not shown) and calling data stored in the memory, executing methods 01, 03, 033, 05, and 07.

[0108] The power sharing device 300 is a structure capable of connecting to multiple PSE devices 100 and enabling power distribution among them. The power sharing sub-board 50 of the PSE devices 100 is connected to the input / output ports 320 of the power sharing device 300, using various interfaces and lines to facilitate information exchange and energy transfer between the PSE devices 100 and the power sharing device 300. In some embodiments, the power sharing sub-board 50 can connect to a single input / output port 320, which is dedicated to serving that PSE device 100, improving the reliability of power distribution. In other embodiments, the power sharing sub-board 50 can connect to multiple input / output ports 320 simultaneously, allowing for more flexible information exchange and energy transfer between the power sharing device 300 and the PSE devices 100. It should be noted that the power sharing device 300 is used in conjunction with a network of multiple PSE devices to perform power distribution among them.

[0109] Once the power-sharing daughterboard 50 confirms through its electrical connection with the built-in power supply 30 that the built-in power supply 30 is functioning normally (i.e., the built-in power supply 30 can provide normal power to the motherboard 10), the power-sharing daughterboard 50 determines the operating mode of the PSE device 100 based on power-related status data of the PSE device 100, such as the external power supply budget PoE_budget of the PSE device 100 (i.e., the maximum power that the PSE device 100 can output to the PD device), and the rated power P1 of the built-in power supply 30, and controls whether the power-sharing device 300 supplies power to the PSE device 100. The operating modes include power extension mode and power sharing mode.

[0110] In the power extension mode, the power supply capacity of PSE device 100 is less than the power supply requirement (external power supply budget). In this case, PSE device 100's power supply capacity is insufficient, requiring power sharing device 300 to provide supplementary power, i.e., power extension for PSE device 100. At this time, power sharing device 300 can output power to power sharing daughterboard 50 through input / output port 320, so that motherboard 10 can receive power from both the built-in power supply 30 and power sharing device 300 through power sharing daughterboard 50, thus ensuring PSE device 100 has sufficient power to power PD devices. VPoE represents the voltage used to implement Power over Ethernet. For example, please refer to... Figure 3 The voltage value of the power sharing device 300 supplying power to the PSE device 100 through the power sharing subboard 50 is VPoE-input.

[0111] In power-sharing mode, the power supply capacity of PSE device 100 exceeds the power supply demand (external power supply budget). In this case, PSE device 100 has a power surplus, which can be shared to provide the surplus power to other PSE devices 100 in power-expansion mode within the multi-PSE device network. At this time, power-sharing device 300 can receive power from power-sharing daughterboard 50 through input / output port 320, enabling the built-in power supply 30 to transmit power to power-sharing device 300 through power-sharing daughterboard 50, thereby improving the energy utilization and operational stability of the multi-PSE device network. For example, please refer to... Figure 3 The voltage value of the power supply from the PSE device 100 to the power sharing device 300 through the power sharing sub-board 50 is VPoE-output.

[0112] In the control method and PSE device 100 provided in this application, the PSE device 100 establishes a power supply connection with the input / output port 320 of the power sharing device 300 through the power sharing daughterboard 50, enabling communication and bidirectional current transmission between the PSE device 100 and the power sharing device 300. When the built-in power supply 30 of the PSE device 100 is functioning normally, it is confirmed whether the operating mode of the PSE device 100 is either power extension mode or power sharing mode. In power extension mode, the mainboard 10 of the PSE device 100 can receive power from the built-in power supply 30 through the power sharing daughterboard 50, and also receive power from the power sharing device 300 through the power sharing daughterboard 50. In power sharing mode, the built-in power supply 30 of the PSE device 100 can transmit power to the power sharing device 300 through the power sharing daughterboard 50, whereby the power sharing device 300 distributes this power. At this time, the PSE device 100 can receive power from the power sharing device 300 to meet the energy demand of the PD device when the output power is insufficient, and can transmit power to the power sharing device 300 when the power is excessive, so that the power sharing device 300 can distribute it to other PSE devices 100 in power sharing mode for efficient energy utilization. This realizes automatic and flexible scheduling, and the power can be precisely allocated with small granularity, which can better cope with various application scenarios of multi-PSE device networking.

[0113] Please refer to Figure 1 and Figure 4 In some implementations, the operating mode also includes a redundancy mode. The control method further includes:

[0114] 021: When the built-in power supply 30 fails to supply power, the PSE device 100 enters the redundancy mode. In the redundancy mode, the motherboard 10 receives power from the power sharing device 300 through the power sharing daughterboard 50.

[0115] Please refer to Figure 2 and Figure 3 The control method for the PSE device described above can be applied to the PSE device 100. Specifically, the operating mode of the PSE device 100 also includes a redundancy mode. The power sharing daughterboard 50 is also configured to enter the redundancy mode when the built-in power supply 30 fails to supply power. In the redundancy mode, the motherboard 10 receives power from the power sharing device 300.

[0116] Specifically, when the power sharing daughterboard 50 determines, based on its electrical connection with the built-in power supply 30, that the built-in power supply 30 is malfunctioning and unable to provide normal power to the motherboard 10, the power sharing daughterboard 50 confirms that the PSE device 100 is operating in redundant mode. At this time, the motherboard 10 of the PSE device 100 cannot receive power from the built-in power supply 30 through the power sharing daughterboard 50. To prevent the PSE device 100 from failing to provide power in redundant mode, which could cause malfunctions in the connected PD devices, the power sharing device 300 outputs power to the power sharing daughterboard 50 through its input / output port 320. This allows the motherboard 10 to receive power from the power sharing device 300 through the power sharing daughterboard 50, ensuring that the PSE device 100 still has sufficient power to supply the PD devices even when the built-in power supply 300 is malfunctioning.

[0117] Therefore, in the control method of the PSE device and the PSE device 100 provided in this application, the PSE device 100 can supply power to the PD device with the energy provided by the power sharing device 300 when the built-in power supply 30 is abnormal. The PSE device 100 has high flexibility and good stability and reliability in the process of supplying power to the PD device, which is conducive to improving the user experience and the reputation of the PSE device 100 supplier.

[0118] Please refer to Figure 5 In some implementations, in the redundant mode, it further includes:

[0119] 022: Check if the power supply status of the built-in power supply 30 has changed;

[0120] 0231: When the built-in power supply 30 changes to normal power supply, proceed to the step of confirming the operating mode of the PSE device 100; and

[0121] 0233: Maintain in redundant mode when the built-in power supply 30 is still malfunctioning.

[0122] Please refer to Figure 2 and Figure 3 The control method of the PSE device described above can be applied to the PSE device 100. Specifically, in the redundant mode, the power sharing sub-board 50 is also configured to: detect whether the power supply status of the built-in power supply 30 has changed; when the built-in power supply 30 changes to normal power supply, reconfirm the working mode of the PSE device 100; and when the built-in power supply 30 is still abnormal, maintain the redundant mode.

[0123] Specifically, in redundant mode, the power sharing daughterboard 50 continues to monitor the built-in power supply 30 to detect whether the built-in power supply 30 has resumed power supply, that is, to confirm whether the built-in power supply 30 has resumed its ability to supply power to the motherboard 10 normally.

[0124] Once the power sharing daughterboard 50 determines that the built-in power supply 30 can restore normal power supply to the motherboard 10, the power sharing daughterboard 50 re-determines the operating mode of the PSE device 100 based on the power-related status data of the PSE device 100. It can be understood that the operating modes here include power extension mode and power sharing mode.

[0125] If the power sharing daughterboard 50 determines that the built-in power supply 30 has failed to restore normal power supply to the motherboard 10, the power sharing daughterboard 50 controls the PSE device 100 to remain in redundant mode and continues to output power to the power sharing daughterboard 50 through the input / output port 320 by the power sharing device 300, so that the motherboard 10 can receive power from the power sharing device 300 through the power sharing daughterboard 50.

[0126] Therefore, in the control method of the PSE device and the PSE device 100 provided in this application, the power sharing sub-board 50 continuously detects whether the PSE device 100 has restored its self-powering capability, so as to reduce the time in the redundant mode, avoid the power sharing system 1000 from over-discharging, and improve the working efficiency of the PSE device 100.

[0127] Please refer to Figure 1 and Figure 6 In some implementations, 03: When the built-in power supply 30 is supplying power normally, confirm the operating mode of the PSE device 100, including:

[0128] 031: When the rated power P1 of the built-in power supply 30 is less than the external power supply budget PoE_budget of the PSE device 100, confirm that the operating mode of the PSE device 100 is the power extension mode; and

[0129] 033: When the rated power P1 of the built-in power supply 30 is greater than the external power supply budget PoE_budget of the PSE device 100, and the difference between the rated power P1 and the external power supply budget PoE_budget is greater than the preset first threshold, the working mode of the PSE device 100 is confirmed to be the power sharing mode.

[0130] Please refer to Figure 2 and Figure 3 The control method for the PSE device described above can be applied to the PSE device 100. Specifically, the power sharing sub-board 50 is configured to: when the rated power P1 of the built-in power supply 30 is less than the external power supply budget PoE_budget of the PSE device 100, the operating mode of the PSE device 100 is the power extension mode; and when the rated power P1 of the built-in power supply 30 is greater than the external power supply budget PoE_budget of the PSE device 100, and the difference between the rated power P1 and the external power supply budget PoE_budget is greater than a preset first threshold, the operating mode of the PSE device 100 is confirmed to be the power sharing mode.

[0131] Specifically, the power-related status data used by the power-sharing daughterboard 50 in determining the operating mode includes at least the external power supply budget PoE_budget of the PSE device 100 and the rated power P1 of the built-in power supply 30. The power-sharing daughterboard 50 obtains the external power supply budget PoE_budget and the rated power P1 of the built-in power supply 30, and compares the external power supply budget PoE_budget and the rated power P1 of the built-in power supply 30.

[0132] When the power sharing subboard 50 determines that the rated power P1 of the built-in power supply 30 is less than the external power supply power budget PoE_budget, it determines that the power supply capacity of the PSE device 100 is less than the power supply demand, and sets the operating mode of the PSE device 100 to power extension mode.

[0133] When the power sharing subboard 50 determines that the rated power P1 of the built-in power supply 30 is greater than the external power supply power budget PoE_budget, it calculates the difference between the rated power P1 and the external power supply power budget PoE_budget and compares this difference with a preset first threshold. The first threshold is used to determine whether the PSE device 100 has a certain power margin to share surplus power. Setting the first threshold protects the PSE device 100 from over-discharge. If the power sharing subboard 50 further determines that the difference between the rated power P1 and the external power supply power budget PoE_budget is greater than the first threshold, it determines that the PSE device 100's power supply capacity exceeds its power demand and sets the PSE device 100's operating mode to power sharing mode.

[0134] In the control method and PSE device 100 provided in this application, the power sharing sub-board 50 determines the working mode of the PSE device 100 through the rated power P1 and the external power supply budget PoE_budget, which enables automated and flexible scheduling of the PSE device 100 to better cope with various application scenarios of multi-PSE device networking.

[0135] Please refer to Figure 7 In some implementations, in power extension mode, the following is also included:

[0136] 051: The power sharing sub-board 50 obtains the supplementary power P_request required by the PSE device 100 based on the rated power P1 and the external power supply budget PoE_budget, and sends the supplementary power P_request to the power sharing device 300;

[0137] 052: The power sharing sub-board 50 receives the maximum power P_limit that its corresponding input / output port 320 can provide, fed back by the power sharing device 300.

[0138] 0531: If the maximum power P_limit is greater than the supplementary power P_request, then the power sharing subboard 50 maintains the power expansion ready state; and

[0139] 054: When the total power consumption Pall of the PD devices connected to the PSE device 100 exceeds the rated power P1, the motherboard 10 receives the power transmitted by the power sharing device 300 and the rated power P1 transmitted by the built-in power supply 30 through the power sharing daughterboard 50.

[0140] Please refer to Figure 2 and Figure 3 The control method for the PSE device described above can be applied to the PSE device 100. Specifically, in the power extension mode, the power sharing daughterboard 50 is further configured to: obtain the supplementary power P_request required by the PSE device 100 based on the rated power P1 and the external power supply budget PoE_budget, and send the supplementary power P_request to the power sharing device 300; receive the maximum power P_limit that the corresponding input / output port 320 can provide, fed back by the power sharing device 300; if the maximum power P_limit is greater than the supplementary power P_request, maintain the power extension ready state; and when the total power consumption Pall of the PD devices connected to the PSE device 100 exceeds the rated power P1, cause the motherboard 10 to receive the power transmitted by the power sharing device 300 and the rated power P1 transmitted by the built-in power supply 30 through the power sharing daughterboard 50.

[0141] Specifically, when the PSE device 100 is in power extension mode, the difference between the rated power P1 and the external power supply budget PoE_budget represents the power shortfall of the PSE device 100, that is, the PSE device 100 needs supplementary power P_request from the power sharing device 300. The power sharing daughterboard 50 calculates the difference between the external power supply budget PoE_budget and the rated power P1, and determines the difference as the supplementary power P_request. Furthermore, the power sharing daughterboard 50 communicates with the power sharing device 300 and sends the supplementary power P_request to the power sharing device 300 to inform the power sharing device 300 of the specific value of the required power shortfall.

[0142] After receiving the supplementary power P_request, the power sharing device 300 transmits the maximum power that it can provide to the PSE device 100, i.e., the maximum power P_limit, to the PSE device 100. The maximum power P_limit is the maximum power value that the power sharing device 300 and the corresponding input / output port 320 of the PSE device 100 can provide to the PSE device 100.

[0143] The power sharing daughterboard 50 receives the maximum power P_limit and compares it with the supplementary power P_request. If the power sharing daughterboard 50 confirms that the maximum power P_limit is greater than the supplementary power P_request, the power sharing daughterboard 50 remains in the power expansion ready state. This power expansion ready state can be understood as the state mentioned above where the motherboard 10 is able to receive power from the built-in power supply 30 and the power sharing device 300 through the power sharing daughterboard 50.

[0144] When the PSE device 100 is connected to the PD device and supplies power to the PD device, the power sharing daughterboard 50 obtains the total power consumption Pall of the PD device and compares the total power consumption Pall with the rated power P1. If the power sharing daughterboard 50 determines that the total power consumption Pall is greater than the rated power P1, it performs a power extension step. That is, the motherboard 10 receives power from the power sharing device 300 through the power sharing daughterboard 50, while also receiving the rated power P1 from the built-in power supply 30. At this time, the power supplied by the power sharing device 300 to the motherboard 10 is the difference between the total power consumption Pall and the rated power P1, and is not greater than the supplementary power P_request.

[0145] In the control method and PSE device 100 provided in this application, the power sharing sub-board 50 determines the supplementary power P_request based on the rated power P1 and the external power supply budget PoE_budget, and controls the state of the power sharing sub-board 50 according to the relationship between the maximum power P_limit fed back by the power sharing device 300 and the supplementary power P_request, so as to receive the power supplied by the power sharing device 300 as supplement when the total power consumption Pall of the PD device exceeds the rated power P1. The power of the PSE device 100 can receive the power supply from the power sharing device 300 to meet the energy demand of the PD device when the output power is insufficient, realizing the automatic and flexible supplementation of the power required by the PSE device 100, and can better cope with various application scenarios of multi-PSE device networking.

[0146] Please refer to Figure 8 In some implementations, in power extension mode, the following is also included:

[0147] 055: When the total power consumption Pall of the PD devices connected to PSE device 100 becomes less than or equal to the rated power P1, the mainboard 10 changes to receiving power from the built-in power supply 30 through the power sharing subboard 50; and

[0148] 056: When the total power consumption Pall of the PD devices connected to PSE device 100 exceeds the external power supply budget PoE_budget, the motherboard 10 controls the disconnection of power supply to some PD devices.

[0149] Please refer to Figure 2 and Figure 3 The control method for the PSE device described above can be applied to the PSE device 100. Specifically, in the power extension mode, the power sharing sub-board 50 is further configured to: when the total power consumption Pall of the PD devices connected to the PSE device 100 becomes less than or equal to the rated power P1, the main board 10 is configured to receive power from the built-in power supply 30 through the power sharing sub-board 50; the main board 10 is configured to: when the total power consumption Pall of the PD devices connected to the PSE device 100 is greater than the external power supply budget PoE_budget, control the cutting off of power supply to some PD devices.

[0150] Specifically, when the PSE device 100 is connected to the PD device and supplies power to the PD device, the power sharing daughterboard 50 obtains the total power consumption Pall of the PD device and compares the total power consumption Pall with the rated power P1. When the power sharing daughterboard 50 determines that the total power consumption Pall is less than the rated power P1, it determines that the built-in power supply 30 can provide sufficient power to the motherboard 10. At this time, the power output by the built-in power supply 30 is transmitted to the motherboard 10 via the power sharing device 300, and this power is the total power consumption Pall.

[0151] The power sharing daughterboard 50 also compares the total power consumption Pall with the external power supply budget PoE_budget. When the power sharing daughterboard 50 determines that the total power consumption Pall exceeds the external power supply budget PoE_budget, it also determines that the power sharing device 300 and the built-in power supply 30 cannot meet the needs of the PD devices even when both are powered by the power sharing device 300 and the built-in power supply 30. In this case, the motherboard 10 controls the disconnection of power to some PD devices to reduce the total power consumption Pall and avoid serious power supply anomalies. For example, there are priorities among the PD devices; in the above situation, the lower-priority PD devices are powered off to ensure that the higher-priority main PD devices operate normally.

[0152] In the control method and PSE device 100 provided in this application, the power sharing sub-board 50 accurately adjusts the working state of the PSE device 100 according to the total power consumption Pall, rated power P1 and external power supply budget PoE_budget, so as to ensure that the PSE device 100 can maintain normal power supply to most PD devices as much as possible, so as to better cope with various application scenarios of multi-PSE device networking.

[0153] Please refer to Figure 9 In some implementations, in power extension mode, the following is also included:

[0154] 0533: If the maximum power P_limit is less than the supplementary power P_request, then the mainboard 10 receives the adjustment notification sent by the power sharing device 300 through the power sharing daughterboard 50; and

[0155] 0534: Motherboard 10 responded to the adjustment notification and adjusted the external power supply budget PoE_budget to a value no greater than (P_limit+P1).

[0156] Please refer to Figure 2 and Figure 3 The control method of the above-mentioned PSE device can be applied to PSE device 100. Specifically, in power extension mode, the motherboard 10 is also configured to: if the maximum power P_limit is less than the supplementary power P_request, receive the adjustment notification from the power sharing device 300 through the power sharing daughterboard 50, and respond to the adjustment notification by adjusting the external power supply budget PoE_budget to a value no greater than (P_limit+P1).

[0157] Specifically, the power-sharing device 300 compares the maximum power P_limit with the received supplementary power P_request. If it determines that the maximum power P_limit is less than the supplementary power P_request, it sends an adjustment notification to the PSE device 100, informing it that the power-sharing device 300 cannot provide sufficient power and requesting the PSE device 100 to reduce its external power supply budget PoE_budget. This adjustment notification is transmitted to the main board 10 via the power-sharing daughterboard 50.

[0158] Furthermore, the motherboard 10 receives and responds to the above adjustment notification to adjust the external power supply budget PoE_budget. Specifically, the external power supply budget PoE_budget is adjusted to a value no greater than (P_limit+P1) so that the power provided by the power sharing device 300 and the power provided by the built-in power supply 30 can jointly meet the power gap corresponding to the supplementary power P_request.

[0159] In the control method and PSE device 100 provided in this application, the motherboard 10 can respond to the adjustment notification sent by the power sharing device 300 when the maximum power P_limit is less than the supplementary power P_request, and budget the external power supply power PoE_budget to ensure that the power provided by the power sharing device 300 and the power provided by the built-in power supply 30 can meet the power gap corresponding to the supplementary power P_request. At this time, the power of the PSE device 100 can receive power from the power sharing device 300 to meet the energy demand of the PD device when the output power is insufficient. This realizes the automatic and flexible supplementation of the power required by the PSE device 100, and can better cope with various application scenarios of multi-PSE device networking.

[0160] Please refer to Figure 10 In some implementations, in power extension mode, the following is also included:

[0161] 057: Check if the power supply status of the built-in power supply 30 is normal;

[0162] 0581: When the built-in power supply 30 is supplying power normally, check whether the external power supply budget PoE_budget has changed;

[0163] 0591: When the external power supply budget PoE_budget has not changed, the power sharing sub-board 50 maintains the power expansion ready state;

[0164] 0593: When the external power supply budget PoE_budget changes, return to the steps to confirm the operating mode of PSE device 100; and

[0165] 0583: When the built-in power supply 30 fails to supply power, return to PSE device 100 to enter redundant mode.

[0166] Please refer to Figure 2 and Figure 3 The control method for the PSE device described above can be applied to the PSE device 100. Specifically, in the power extension mode, the power sharing sub-board 50 is further configured to: detect whether the power supply status of the built-in power supply 30 is normal; when the built-in power supply 30 is normal, detect whether the external power supply power budget PoE_budget has changed; when the external power supply power budget PoE_budget has not changed, maintain the power extension ready state; when the external power supply power budget PoE_budget has changed, confirm the working mode of the PSE device 100; and when the built-in power supply 30 is abnormal, the PSE device 100 enters the redundancy mode.

[0167] Specifically, when the PSE device 100 is in power extension mode, in order to prevent power supply abnormalities or interruptions caused by power supply failures in the built-in power supply 30, the power sharing daughterboard 50 checks the power supply status of the built-in power supply 30 at specific intervals to determine whether it is normal.

[0168] Once the power sharing sub-board 50 confirms that the power supply status of the built-in power supply 30 is normal, the power sharing sub-board 50 further checks whether the external power supply budget PoE_budget has changed, so as to ensure that the working mode of the PSE device 100 is adapted to the current power gap. At this time, the overall energy utilization rate of the multi-PSE device network is high.

[0169] When the power sharing subboard 50 determines that the external power supply budget PoE_budget has not changed, the power sharing subboard 50 continues to maintain the power expansion ready state, that is, the motherboard 10 mentioned above is in a state where it can receive power from the built-in power supply 30 and the power sharing device 300 through the power sharing subboard 50, and can continue to perform the power expansion steps mentioned above.

[0170] When the power sharing subboard 50 determines that the external power supply budget PoE_budget has changed, the power sharing subboard 50 returns to the step of confirming the operating mode of the PSE device 100. It can be understood that the operating mode here also includes power extension mode and power sharing mode. If the power sharing subboard 50 determines that the power supply status of the built-in power supply 30 is abnormal, the power sharing subboard 50 controls the PSE device 100 to enter redundancy mode.

[0171] In the control method and PSE device 100 provided in this application, when the PSE device 100 is in power extension mode, the power sharing sub-board 50 continuously monitors the power supply status of the built-in power supply 30 and the external power supply budget PoE_budget, so as to control and switch the working mode of the PSE device 100 in a timely manner, ensuring that the PSE device 100 can work normally, so as to better cope with various application scenarios of multi-PSE device networking.

[0172] Please refer to Figure 11 In some embodiments, the PSE device 100 also includes an output switch. In power-sharing mode, the control method further includes:

[0173] 071: The power sharing sub-board 50 obtains the remaining power P_surplus of the PSE device 100 based on the rated power P1 and the external power supply budget PoE_budget, and sends the remaining power P_surplus to the power sharing device 300; and

[0174] 072: When the input voltage output from PSE device 100 to the corresponding input / output port 320 meets the preset range, the power sharing sub-board 50 controls the output switch to turn on, and outputs part or all of the remaining power P_surplus generated by the built-in power supply 30 to the power sharing device 300 to perform power sharing.

[0175] Please refer to Figure 2 and Figure 3 The control method for the aforementioned PSE device can be applied to the PSE device 100. Specifically, the power sharing sub-board 50 also includes an output switch. In power sharing mode, the power sharing sub-board 50 is further configured to: obtain the remaining power P_surplus based on the rated power P1 and the external power supply budget PoE_budget, and send P_surplus to the power sharing device 300; and, when the voltage output to the power sharing device 300 meets a preset range, control the output switch to open and output part or all of the P_surplus generated by the built-in power supply 30 to the power sharing device 300 to perform power sharing.

[0176] Specifically, the power sharing device 300 obtains the external power supply budget PoE_budget and the rated power P1 of the built-in power supply 30, and compares the external power supply budget PoE_budget and the rated power P1 of the built-in power supply 30. If the power sharing device 300 determines that the rated power P1 of the built-in power supply 30 is greater than the external power supply budget PoE_budget, it determines that the power supply capacity of the PSE device 100 exceeds the power supply demand, and sets the operating mode of the PSE device 100 to power sharing mode.

[0177] When the PSE device 100 is in power-sharing mode, the difference between the external power supply budget PoE_budget and the rated power P1 represents the surplus power of the PSE device 100, that is, the remaining power P_surplus that the PSE device 100 can provide to the power-sharing device 300. The power-sharing daughterboard 50 calculates the difference between the rated power P1 and the external power supply budget PoE_budget, and determines the difference as the remaining power P_surplus. Furthermore, the power-sharing daughterboard 50 communicates with the power-sharing device 300 and sends the remaining power P_surplus to the power-sharing device 300 to inform it of the specific value of the surplus power that the PSE device 100 can provide to the power-sharing device 300.

[0178] During the process of PSE device 100 supplying power to power sharing device 300, PSE device 100 inputs a certain electrical signal to the corresponding input / output port 320 of power sharing device 300 through power sharing sub-board 50. When power sharing device 300 determines that the input voltage meets the preset range and transmits this information to power sharing sub-board 50, power sharing sub-board 50 controls the output switch to open, so as to output part or all of the remaining power P_surplus generated by the built-in power supply 30 to power sharing device 300, i.e., perform power sharing. At this time, power sharing device 300 can provide this part of the power to other PSE devices 100 connected to power sharing device 300 that are in power extension mode.

[0179] In the control method and PSE device 100 provided in this application, the power sharing sub-board 50 determines the working mode of the PSE device 100 through the rated power P1 and the external power supply budget PoE_budget, which enables automated and flexible scheduling of the PSE device 100 to better cope with various application scenarios of multi-PSE device networking.

[0180] Please refer to Figure 12 In some implementations, in power-sharing mode, the following is also included:

[0181] 073: The power sharing sub-board 50 monitors its output power Pout in real time; and

[0182] 074: When the difference between the remaining power P_surplus and the output power Pout is less than the preset second threshold, the power sharing sub-board 50 controls the output switch to turn off and stop power sharing.

[0183] Please refer to Figure 2 and Figure 3The control method of the above-mentioned PSE device can be applied to PSE device 100. Specifically, in power sharing mode, the power sharing sub-board 50 is also configured to: monitor its output power Pout in real time; and, when the difference between the remaining power P_surplus and the output power Pout is less than a preset second threshold, control the output switch to turn off and stop power sharing.

[0184] Specifically, during the process of PSE device 100 sharing power with power sharing device 300 through power sharing sub-board 50, i.e. transmitting power, the power sharing sub-board 50 monitors the output power Pout it outputs to power sharing device 300 in real time, i.e., obtains the output power Pout value in real time.

[0185] The power sharing subboard 50 calculates the difference between the remaining power P_surplus and the output power Pout, and compares this difference with a preset second threshold. The second threshold is used to determine if the output power Pout of the PSE device 100 is too high. Presetting the second threshold further protects the PSE device 100 from over-discharge. If the power sharing device 300 further determines that the difference between the remaining power P_surplus and the output power Pout is less than the preset second threshold, it determines that the power output by the PSE device 100 to the power sharing device 300 is too high. The PSE device 100 is at risk of over-discharge, and power sharing with the PSE device 100 is stopped.

[0186] In the control method and PSE device 100 provided in this application, the power sharing sub-board 50 determines whether the power sharing of PSE device 100 is safe by using the remaining power P_surplus and the output power Pout, so as to avoid the over-discharge of PSE device 100, ensure that PSE device 100 can work normally and has a long service life.

[0187] Please refer to Figure 13 In some implementations, in power-sharing mode, the following is also included:

[0188] 075: When the difference between the remaining power P_surplus and the output power Pout is greater than the second threshold, or during the power sharing process, check whether the power supply status of the built-in power supply 30 is normal.

[0189] 0761: When the built-in power supply 30 is supplying power normally, check whether the external power supply budget PoE_budget has changed;

[0190] 0771: When the external power supply budget PoE_budget has not changed, the power sharing sub-board 50 control output switch is kept on, and part or all of the remaining power P_surplus generated by the built-in power supply 30 is output to the power sharing device 300 to perform the power sharing steps.

[0191] 0773: When the external power supply budget PoE_budget changes, return to the steps to confirm the operating mode of PSE device 100; and

[0192] 0763: When the built-in power supply 30 fails to supply power, return to PSE device 100 to enter redundant mode.

[0193] Please refer to Figure 2 and Figure 3 The control method for the PSE device described above can be applied to the PSE device 100. Specifically, in the power sharing mode, the power sharing sub-board 50 is further configured to: detect whether the power supply status of the built-in power supply 30 is normal when the difference between the remaining power P_surplus and the output power Pout is greater than a second threshold, or during the power sharing process; detect whether the external power supply budget PoE_budget has changed when the built-in power supply 30 is supplying power normally; re-acquire and report the remaining power P_surplus when the external power supply budget PoE_budget has not changed; reconfirm the working mode of the PSE device 100 when the external power supply budget PoE_budget has changed; and enter the redundancy mode when the built-in power supply 30 is supplying power abnormally.

[0194] Specifically, when the PSE device 100 is in power-sharing mode, i.e., when the difference between the remaining power P_surplus and the output power Pout is greater than a second threshold, or when power sharing is being performed, in order to avoid power supply abnormalities or interruptions caused by power supply anomalies in the built-in power supply 30, the power-sharing daughterboard 50 checks the power supply status of the built-in power supply 30 at specific intervals to determine whether it is normal.

[0195] If the power sharing sub-board 50 determines that the power supply status of the built-in power supply 30 is normal, the power sharing sub-board 50 further detects whether the external power supply budget PoE_budget has changed, so as to ensure that the working mode of the PSE device 100 is adapted to the current remaining power P_surplus. At this time, the overall energy utilization rate of the multi-PSE device network is high.

[0196] When the power sharing subboard 50 determines that the external power supply budget PoE_budget has not changed, the power sharing subboard 50 continues to control the PSE device 100 to maintain the power sharing mode and transmits power to the power sharing device 300. More specifically, the power sharing subboard 50 keeps the output switch in the on state and outputs part or all of the surplus power P_surplus generated by the built-in power supply 30 to the power sharing device 300, so that the power sharing device 300 can flexibly allocate this part of the energy.

[0197] When the power sharing subboard 50 determines that the external power supply budget PoE_budget has changed, the power sharing subboard 50 returns to the step of confirming the operating mode of the PSE device 100. It can be understood that the operating mode here also includes power extension mode and power sharing mode. If the power sharing subboard 50 determines that the power supply status of the built-in power supply 30 is abnormal, the power sharing subboard 50 controls the PSE device 100 to enter redundancy mode.

[0198] In the control method and PSE device 100 provided in this application, when the PSE device 100 is in power sharing mode, the power sharing sub-board 50 continuously monitors the power supply status of the built-in power supply 30 and the external power supply budget PoE_budget, so as to control and switch the working mode of the PSE device 100 in a timely manner, ensuring that the PSE device 100 can work normally, so as to better cope with various application scenarios of multi-PSE device networking.

[0199] Please refer to Figure 1 and Figure 14 In some implementations, 01: PSE device 100 establishes a power supply connection with an input / output port 320 of power sharing device 300 via power sharing daughterboard 50, including:

[0200] 011: After the power sharing subboard 50 receives the standby voltage Vstandby provided by the power sharing device 300 through its shared power input / output port, the system control module 310 of the power sharing subboard 50 starts and completes initialization;

[0201] 012: The power sharing sub-board 50 sends a power-on request to the power sharing device 300;

[0202] 013: After the power sharing device 300 responds to the power-on request and turns on the power supply, the power sharing daughter board 50 receives the initial output voltage Vout1, the initial output current Iout1, and the port rated power P_rated sampled and sent by the power sharing device 300;

[0203] 014: The control module of the power sharing sub-board 50 collects the input voltage Vin1 and input current Iin1 at the input / output port of the shared power supply;

[0204] 015: Based on the initial output voltage Vout1, initial output current Iout1, port rated power P_rated, input voltage Vin1, and input current Iin1, the power sharing daughterboard 50 performs voltage matching;

[0205] 016: PSE device 100 sends its own redundant power requirement P_redundancy to power sharing device 300, so that power sharing device 300 performs power matching; and

[0206] 017: After successful voltage matching and receiving feedback from the power sharing device 300 confirming successful power matching, the power sharing sub-board 50 controls its input switch to open, thus completing the establishment of the power supply connection.

[0207] Please refer to Figure 2 , Figure 3 and Figure 18 The control method for the aforementioned PSE device can be applied to the PSE device 100. Specifically, the power sharing sub-board 50 is configured to: after receiving the standby voltage Vstandby provided by the power sharing device 300 through its shared power input / output port, the control module of the power sharing sub-board 50 starts and completes initialization; sends a power-on request to the power sharing device 300; after the power sharing device 300 responds to the power-on request and turns on the power supply, it receives the initial output voltage Vout1, the initial output current Iout1, and the port rated power P_rated sampled and sent by the power sharing device 300; The system collects the input voltage Vin1 and input current Iin1 at the input / output ports of the shared power supply; performs voltage matching based on the initial output voltage Vout1, initial output current Iout1, port rated power P_rated, input voltage Vin1, and input current Iin1; sends its own redundant power requirement P_redundancy to the power sharing device 300 so that the power sharing device 300 performs power matching; and, after successful voltage matching and receiving feedback from the power sharing device 300 confirming successful power matching, controls its input switch to open, completing the establishment of the power supply connection.

[0208] Specifically, before establishing a stable power supply connection and formally enabling bidirectional power supply, the power sharing device 300 and the PSE device 100 need to undergo a matching process to avoid damage to the power sharing device 300 and / or the PSE device 100 caused by the power sharing device 300 directly outputting high-power power to the PSE device 100, and to avoid the problem that the PSE device 100 cannot interact with the power sharing device 300 when it is not powered on, and cannot negotiate power supply without interaction.

[0209] More specifically, when the power sharing device 300 and the PSE device 100 are physically connected, the backup voltage Vstandby provided by the power sharing device 300 to the power sharing sub-board 50 is received by the shared power input / output port of the power sharing sub-board 50. When the backup voltage Vstandby is received, the system control module 310 of the power sharing sub-board 50 starts and completes initialization, and the power sharing device 300 and the PSE device 100 can communicate.

[0210] The power sharing daughterboard 50 sends a power-on request to the power sharing device 300 through the shared power input / output port, requesting to establish a stable electrical connection with the power sharing device 300. The power sharing device 300 receives and responds to the power-on request from the PSE device 100 and starts supplying power to the PSE device 100 (i.e., the power sharing daughterboard 50). At this time, the power sharing daughterboard 50 receives an electrical signal sampled and sent by the power sharing device 300. The specific parameters of this electrical signal include at least the initial output voltage Vout1, the initial output current Iout1, and the port rated power P_rated.

[0211] Simultaneously, the power sharing daughterboard 50 also collects and receives the input voltage Vin1 and input current Iin1 at the shared power input / output port when the power sharing device 300 is connected. It can be understood that the input current Iin1 here is equal to the initial output current Iout1. Based on the initial output voltage Vout1, initial output current Iout1, port rated power P_rated, input voltage Vin1, and input current Iin1, the power sharing daughterboard 50 determines whether the voltage output by the power sharing device 300 matches the voltage required by the PSE device 100, i.e., performs voltage matching.

[0212] Furthermore, the power sharing daughterboard 50 also sends its own redundant power requirement P_redundancy to the power sharing device 300. The power sharing device 300 compares the received redundant power requirement P_redundancy with the maximum power P_limit, and determines that its power is sufficient to supply power to the PSE device 100 if the redundant power requirement P_redundancy is less than the maximum power P_limit.

[0213] When the voltage matching is successful and the power matching is received from the power sharing device 300, the power sharing daughter board 50 controls the input switch located inside it to turn on so that it can receive high power supply from the power sharing device 300. At this time, a stable power supply connection is established between the PSE device 100 and the power sharing device 300.

[0214] In the control method and PSE device 100 provided in this application, the power sharing device 300 and the PSE device 100 first perform voltage matching and power matching, and establish a stable power supply connection after successful matching to carry out formal, high-power bidirectional power supply. At this time, the power sharing device 300 and / or the PSE device 100 have good safety performance, are not prone to damage, and have a long service life.

[0215] Please refer to Figure 1 , Figure 14 and Figure 15 In some implementations, 015: Based on the initial output voltage Vout1, the initial output current Iout1, the port rated power P_rated, the input voltage Vin1, and the input current Iin1, the power sharing subboard 50 performs voltage matching, including;

[0216] 0151: Obtain the target output voltage Vout2 based on the initial output voltage Vout1, input voltage Vin1, input current Iin1, and port rated power P_rated; and

[0217] 0153: If the target output voltage Vout2 is within the acceptable input voltage range [Vpse1, Vpse2] of the PSE device 100, then request the power sharing device 300 to adjust its output voltage to Vout2 and confirm that the voltage matching is successful.

[0218] Please refer to Figure 2 , Figure 3 and Figure 18 The control method of the above-mentioned PSE device can be applied to the PSE device 100. Specifically, the power sharing sub-board 50 is configured to: obtain the target output voltage Vout2 based on the initial output voltage Vout1, the input voltage Vin1, the input current Iin1, and the port rated power P_rated; and if the target output voltage Vout2 is within the acceptable input voltage range [Vpse1, Vpse2] of the PSE device 100, request the power sharing device 300 to adjust its output voltage to Vout2, and confirm that the voltage matching is successful.

[0219] Specifically, the PSE device 100 has a preset input voltage range of [Vpse1, Vpse2]. This range depends on the PoE voltage combining voltage requirement of the PSE device 100 and is a fixed value set when the PSE device 100 leaves the factory. The PoE voltage combining voltage requirement is the voltage value required to combine with the voltage provided by the built-in power supply 30. The power sharing daughterboard 50, after acquiring the initial output voltage Vout1, input voltage Vin1, input current Iin1, and port rated power P_rated, determines the target output voltage Vout2 based on the initial output voltage Vout1, input voltage Vin1, input current Iin1, port rated power P_rated, and the lower limit of the input voltage range Vpse1. The formula for determining the target output voltage Vout2 is: Vout2 = Vpse1 + I_rated * R, where I_rated = P_rated / Vpse1, R = (Vout1 - Vin1) / Iin1.

[0220] Furthermore, the power sharing sub-board 50 compares the target output voltage Vout2 with the input voltage range [Vpse1, Vpse2], and if the target output voltage Vout2 is within the input voltage range [Vpse1, Vpse2], it sends a request to the power sharing device 300. The request specifically requests the power sharing device 300 to adjust the output voltage to Vout2, and confirms that the voltage matching between the PSE device 100 and the power sharing device 300 is successful.

[0221] In the control method of the PSE device and the PSE device 100 provided in this application, the power sharing sub-board 50 performs voltage matching based on the initial output voltage Vout1, input voltage Vin1, input current Iin1, port rated power P_rated and input voltage range to ensure that the process of establishing a power supply connection is highly reliable. At this time, the power sharing device 300 and / or the PSE device 100 have good safety performance, are not prone to damage, and have a long service life.

[0222] Please refer to Figure 16 This application also provides a control method for a power-sharing device 300, which includes multiple input / output ports 320. The control method includes:

[0223] A power supply connection is established with the PSE device 100 through the input / output port 320. The PSE device 100 includes a motherboard 10, a power sharing daughterboard 50 and a built-in power supply 30. The working modes of the PSE device 100 include power extension mode and power sharing mode.

[0224] When the PSE device 100 is in power extension mode, the power sharing device 300 can power the motherboard 10 through the power sharing daughterboard 50, thereby merging the power supply to the motherboard 10 with that of the built-in power supply 30; and

[0225] When the PSE device 100 is in power-sharing mode, the power-sharing device 300 is able to receive power transmitted from the built-in power supply 30 through the power-sharing daughterboard 50.

[0226] Please refer to Figure 3 , Figure 17 and Figure 18 The control method for the power-sharing device described above can be applied to the power-sharing device 300. Specifically, the power-sharing device 300 includes a system control module 310 and multiple input / output ports 320. The system control module 310 is configured to establish a power supply connection with the PSE device 100 through the input / output ports 320. When the PSE device 100 is in power extension mode, the system control module 310 is configured to control the power supply to the motherboard 10 of the PSE device 100 through the input / output ports 320, so as to combine the power supply with the built-in power supply 30 of the PSE device 100. When the PSE device 100 is in power-sharing mode, the system control module 310 is configured to control the reception of power transmitted by the built-in power supply 30 of the PSE device 100 through the input / output ports 320.

[0227] Specifically, it should be noted that the specific structure and properties of the PSE device 100 and the power sharing device 300 in this embodiment are exactly the same as those of the PSE device 100 and the power sharing device 300 in the above embodiments, and will not be explained again here.

[0228] The system control module 310 is used in the power sharing device 300 to control the operation and power distribution of the entire system. It includes sampling the voltage and current of the input / output ports 320 and communicating with the connected PSE device 100. The system control module 310 can execute the control methods of the power sharing device 300 by running or loading instructions stored in a memory (not shown) and calling data stored in the memory. The input / output ports 320 are composite ports in the power sharing device 300 used to connect to the PSE device 100, enabling data communication and current transmission, such as I2C or UART interfaces.

[0229] The power sharing device 300 is electrically connected to the power sharing daughterboard 50 of the PSE device 100 via the input / output port 320 to achieve power sharing and power supply connection with the PSE device 100. Similarly, the PSE device 100 has two operating modes: power extension mode and power sharing mode.

[0230] When the PSE device 100 is in power extension mode, the power sharing device 300 can output power to the power sharing daughter board 50 through the input / output port 320 under the control of the system control module 310. This allows the motherboard 10 to receive power from the built-in power supply 30 through the power sharing daughter board 50, while also receiving power from the power sharing device 300 through the power sharing daughter board 50. This ensures that the PSE device 100 has sufficient power to supply power to the PD device.

[0231] When the PSE device 100 is in power sharing mode, the power sharing device 300 can receive the power output from the power sharing daughterboard 50 through the input / output port 320 under the control of the system control module 310, and can transmit the received energy to other PSE devices 100, such as another PSE device 100 in power extension mode, thereby improving the energy utilization and operational stability of the power sharing system 1000.

[0232] In the control method and power-sharing device 300 provided in this application, the PSE device 100 establishes a power supply connection with the input / output port 320 of the power-sharing device 300 through the power-sharing daughterboard 50, enabling communication and bidirectional current transmission between the PSE device 100 and the power-sharing device 300. When the built-in power supply 30 of the PSE device 100 is functioning normally, it is confirmed whether the operating mode of the PSE device 100 is either power extension mode or power-sharing mode. In power extension mode, the mainboard 10 of the PSE device 100 can receive power from the built-in power supply 30 through the power-sharing daughterboard 50, and also receive power from the power-sharing device 300 through the power-sharing daughterboard 50. In power-sharing mode, the built-in power supply 30 of the PSE device 100 can transmit power to the power-sharing device 300 through the power-sharing daughterboard 50, allowing the power-sharing device 300 to distribute this power. At this time, the PSE device 100 can receive power from the power sharing device 300 to meet the energy demand of the PD device when the output power is insufficient, and can transmit power to the power sharing device 300 when the power is excessive, so that the power sharing device 300 can distribute it to other PSE devices 100 in power sharing mode for efficient energy utilization. This realizes automatic and flexible scheduling, and the power can be precisely allocated with small granularity, which can better cope with various application scenarios of multi-PSE device networking.

[0233] Please refer to Figure 19 In some implementations, the PSE device 100 also includes a redundant operating mode. The control method further includes:

[0234] When the built-in power supply 30 fails to supply power and the PSE device 100 is in redundant mode, the power sharing device 300 supplies power to the motherboard 10 through the power sharing daughterboard 50.

[0235] Please refer to Figure 3 , Figure 17 and Figure 18 The control method of the power sharing device described above can be applied to the power sharing device 300. Specifically, the system control module 310 is also configured to: control the power supply of the motherboard 10 of the PSE device 100 through the input / output port 320 when the built-in power supply 30 of the PSE device 100 is abnormal and the PSE device 100 is in redundant mode.

[0236] Specifically, when the power sharing daughterboard 50 determines, based on its electrical connection with the built-in power supply 30, that the built-in power supply 30 is malfunctioning and unable to provide normal power to the motherboard 10, the power sharing daughterboard 50 confirms that the PSE device 100 is operating in redundant mode. At this time, under the control of the system control module 310, the power sharing device 300 outputs power to the power sharing daughterboard 50 through the input / output port 320, ensuring that the PSE device 100 still has sufficient power to supply the PD device even when the built-in power supply 30 is malfunctioning.

[0237] Therefore, in the control method and power sharing device 300 provided in this application, the power sharing device 300 can supply power to the PD device through the power sharing sub-board 50 when the built-in power supply 30 of the PSE device 100 is abnormal. The power sharing device 300 can assist the operation of the PSE device 100. The process of the PSE device 100 supplying power to the PD device has good stability and reliability, which is conducive to improving the user experience.

[0238] Please refer to Figure 20 In some implementations, when the PSE device 100 is in redundant mode, the control method further includes:

[0239] Continuously communicate with PSE device 100 via input / output port 320 to obtain the power supply status of built-in power supply 30 monitored by power sharing daughterboard 50, and confirm whether to maintain redundant mode and power-ready state; and

[0240] When the built-in power supply 30 is still malfunctioning, the control supplies power to the motherboard 10 of the PSE device 100 through the input / output port 320.

[0241] Please refer to Figure 3 , Figure 17 and Figure 18The control method of the power sharing device described above can be applied to the power sharing device 300. Specifically, the system control module 310 is further configured to: when the PSE device 100 is in redundant mode, continuously communicate with the PSE device 100 through the input / output port 320 to obtain the power supply status of the built-in power supply 30 monitored by the power sharing sub-board 50, and confirm whether to maintain the redundant mode and maintain the power supply ready state; and when the built-in power supply 30 is still abnormal, control the power to be supplied to the motherboard 10 of the PSE device 100 through the input / output port 320.

[0242] Specifically, in redundancy mode, the power sharing daughterboard 50 continuously monitors whether the built-in power supply 30 has restored its ability to supply power to the motherboard 10 normally. Simultaneously, under the control of the system control module 310, the power sharing device 300 continuously interacts with the power sharing daughterboard 50 through the input / output port 320 to maintain communication with the PSE device 100. Specifically, this involves obtaining information on whether the power supply status of the built-in power supply 30 detected by the power sharing daughterboard 50 has changed, and using this information to determine whether the PSE device 100 should maintain redundancy mode and whether the power sharing device 300 needs to continue to maintain a power-ready state.

[0243] Based on the information provided by the power sharing daughterboard 50, if the built-in power supply 30 fails to restore normal power supply to the motherboard 10, the system control module 310 determines that the PSE device 100 is still in redundant mode and continues to control the output of power to the power sharing daughterboard 50 through the input / output port 320, so as to transmit power to the motherboard 10 through the power sharing daughterboard 50.

[0244] Therefore, in the control method of the power sharing device and the power sharing device 300 provided in this application, the power sharing device 300 communicates with the power sharing sub-board 50 and obtains information on whether the PSE device 100 continuously provided by the power sharing sub-board 50 has restored its self-powering capability, so as to reduce the time when the PSE device 100 is in redundant mode. The power sharing device 300 can avoid over-discharge and improve the working efficiency of the PSE device 100.

[0245] Please refer to Figure 21 In some implementations, when the PSE device 100 is in power extension mode, the control method further includes:

[0246] Receive supplementary power P_request sent by power sharing sub-board 50;

[0247] The maximum power P_limit that can be provided by the input / output port 320 connected to the feedback and power sharing subboard 50;

[0248] If the maximum power P_limit is greater than the supplementary power P_request, then the power sharing device 300 is in a power expansion ready state; and

[0249] When the total power consumption Pall of the PD devices connected to the PSE device 100 exceeds the rated power P1 of the built-in power supply 30, the power sharing device 300 supplies power to the main board 10 through the power sharing daughter board 50 to combine with the rated power P1 supplied by the built-in power supply 30 through the power sharing daughter board 50.

[0250] Please refer to Figure 3 , Figure 17 and Figure 18 The control method for the power sharing device described above can be applied to the power sharing device 300. Specifically, the system control module 310 is further configured to: receive the supplementary power P_request sent by the power sharing sub-board 50 of the PSE device 100 when the PSE device 100 is in power extension mode; provide feedback on the maximum power P_limit that the input / output port 320 connected to the power sharing sub-board 50 can provide; if the maximum power P_limit is greater than the supplementary power P_request, control the power sharing device 300 to enter the power extension ready state; and, when the total power consumption Pall of the PD devices connected to the PSE device 100 exceeds the rated power P1 of the built-in power supply 30, control the power to be transmitted to the motherboard 10 through the input / output port 320.

[0251] Specifically, the power sharing device 300 communicates with the power sharing sub-board 50. When the PSE device 100 is in power extension mode, the system control module 310 receives the supplementary power P_request provided by the power sharing sub-board 50 to obtain the specific value of the power gap required by the PSE device 100.

[0252] After receiving the supplementary power P_request, the power sharing device 300 transmits to the PSE device 100 the maximum power that the input / output port 320 currently connected to the power sharing daughterboard 50 can provide to the PSE device 100, i.e., the maximum power P_limit. The maximum power P_limit is the maximum power value that the power sharing device 300 and the corresponding input / output port 320 of the PSE device 100 can provide to the PSE device 100.

[0253] When the power sharing daughterboard 50 confirms that the maximum power P_limit is greater than the supplementary power P_request, the system control module 310 controls the power sharing device 300 to maintain the power expansion ready state. It can be understood that the power expansion ready state is the state in which the power sharing device 300 can supply power to the motherboard 10 through the power sharing daughterboard 50, so as to combine the power supply to the motherboard 10 by the built-in power supply 30.

[0254] When the PSE device 100 connects to the PD device and supplies power to the PD device, the power sharing daughterboard 50 obtains the total power consumption Pall of the PD device. When the power sharing daughterboard 50 determines that the total power consumption Pall is greater than the rated power P1, the power sharing device 300, under the control of the system control module 310, delivers power to the motherboard 10 through the power sharing daughterboard 50. This power is no greater than the supplementary power P_request. The power delivered to the motherboard 10 by the power sharing device 300 is combined with the rated power P1 delivered to the motherboard 10 by the built-in power supply 30, so that the PSE device 100 has a sufficiently large power supply capacity to power the PD device.

[0255] In the control method and power sharing device 300 provided in this application, the power sharing device 300 can control the state of the power sharing sub-board 50 according to the supplementary power P_request and the maximum power P_limit, so as to supply power to the PSE device 100 when the total power consumption Pall of the PD device exceeds the rated power P1. At this time, the power sharing device 300 realizes the automatic and flexible supplementation of the power required by the PSE device 100, so as to ensure that the power of the PSE device 100 can receive power from the power sharing device 300 to meet the energy demand of the PD device when the output power is insufficient. The power sharing device 300 can work together with the PSE device 100 to better cope with various application scenarios of multi-PSE device networking.

[0256] Please refer to Figure 22 In some implementations, when the PSE device 100 is in power extension mode, the control method further includes:

[0257] If the maximum power P_limit is less than the supplementary power P_request, the power sharing device 300 sends an adjustment notification to the main board 10 through the power sharing daughter board 50, so that the main board 10 responds to the adjustment notification and adjusts the external power supply budget PoE_budget of the PSE device 100 to a value no greater than (P_limit+P1).

[0258] Please refer to Figure 3 , Figure 17 and Figure 18 The control method of the power sharing device described above can be applied to the power sharing device 300. Specifically, the system control module 310 is also configured to: if the maximum power P_limit is less than the supplementary power P_request, the control sends an adjustment notification to the motherboard 10 through the input / output port 320, so that the motherboard 10 responds to the adjustment notification and adjusts the external power supply budget PoE_budget of the PSE device 100 to a value not greater than (P_limit+P1).

[0259] Specifically, when the system control module 310 determines that the maximum power P_limit is less than the supplementary power P_request, it sends an adjustment notification to the main board 10 through the power sharing sub-board 50 to inform the PSE device 100 that the power sharing device 300 can provide insufficient power, and requests the PSE device 100 to reduce the external power supply budget PoE_budget.

[0260] Furthermore, the motherboard 10 receives and responds to the above adjustment notification to adjust the external power supply budget PoE_budget. Specifically, the external power supply budget PoE_budget is adjusted to a value no greater than (P_limit+P1) so that the power provided by the power sharing device 300 and the power provided by the built-in power supply 30 can jointly meet the power gap corresponding to the supplementary power P_request.

[0261] In the control method and power sharing device 300 provided in this application, the system control module 310 can send an adjustment notification to the PSE device 100 when the maximum power P_limit is less than the supplementary power P_request, so that the PSE device 100 adjusts the external power supply budget PoE_budget and ensures that the power provided by the power sharing device 300 and the power provided by the built-in power supply 30 can meet the power gap corresponding to the supplementary power P_request. At this time, the power sharing device 300 realizes the automatic and flexible supplementation of the power required by the PSE device 100, so as to ensure that the power of the PSE device 100 can receive power from the power sharing device 300 when the output power is insufficient to meet the energy demand of the PD device. The power sharing device 300 can work together with the PSE device 100 to better cope with various application scenarios of multi-PSE device networking.

[0262] Please refer to Figure 23 In some implementations, when the PSE device 100 is in power-sharing mode, the control method further includes:

[0263] Power sharing device 300 receives the remaining power P_surplus of PSE device 100 sent by power sharing subboard 50; and

[0264] When the input voltage at the input / output port 320 meets the preset range, the power sharing device 300 receives part or all of the remaining power P_surplus generated by the built-in power supply 30 through the power sharing sub-board 50 to perform power sharing.

[0265] Please refer to Figure 3 , Figure 17 and Figure 18The control method for the power sharing device described above can be applied to the power sharing device 300. Specifically, the system control module 310 is further configured to: receive the remaining power P_surplus of the PSE device 100 sent by the power sharing sub-board 50 of the PSE device 100 when the PSE device 100 is in power sharing mode; and control the receiving of part or all of the remaining power P_surplus generated by the built-in power supply 30 through the input / output port 320 when the input voltage of the input / output port 320 connected to the power sharing sub-board 50 meets the preset range.

[0266] Specifically, the power sharing sub-board 50 determines the difference between the rated power P1 and the external power supply budget PoE_budget as the surplus power P_surplus. The system control module 310 communicates with the power sharing sub-board 50 to receive the surplus power P_surplus sent by the power sharing sub-board 50, that is, to know the specific value of the surplus power that the PSE device 100 can provide to the power sharing device 300.

[0267] During the process of PSE device 100 supplying power to power sharing device 300, PSE device 100 inputs a certain electrical signal to the corresponding input / output port 320 of power sharing device 300 through power sharing sub-board 50. When system control module 310 determines that the input voltage meets the preset range and transmits this information to power sharing sub-board 50, power sharing sub-board 50 controls the output switch to open, so as to output part or all of the remaining power P_surplus generated by the built-in power supply 30 to power sharing device 300, i.e., perform power sharing. At this time, power sharing device 300 can distribute this power through system control module 310, such as providing it to other PSE devices 100 connected to power sharing device 300 in power extension mode.

[0268] In the control method and power sharing device 300 provided in this application, the system control module 310 receives the remaining power P_surplus sent by the power sharing daughterboard 50, and receives the power output by the PSE device 100 when the input voltage of the input / output port 320 meets the preset range. At this time, the power sharing device 300 can flexibly schedule the power of multiple PSE devices, and can work in conjunction with the PSE device 100 to better cope with various application scenarios of multi-PSE device networking.

[0269] Please refer to Figure 24 In some implementations, when the PSE device 100 is in power-sharing mode, the control method further includes:

[0270] When the difference between the remaining power P_surplus and the output power Pout of the power sharing sub-board 50 is less than a preset second threshold, the power sharing device 300 stops power sharing.

[0271] Please refer to Figure 3 , Figure 17 and Figure 18 The control method for the power sharing device described above can be applied to the power sharing device 300. Specifically, the system control module 310 is further configured to stop power sharing when the difference between the remaining power P_surplus and the output power Pout of the power sharing sub-board 50 is less than a preset second threshold.

[0272] Specifically, if the power sharing device 300 determines that the difference between the remaining power P_surplus and the output power Pout is less than a preset second threshold, the PSE device 100 is at risk of over-discharge, and the system control module 310 controls the power sharing with the PSE device 100 to stop. Therefore, in the control method and power sharing device 300 provided in this application, the power sharing sub-board 50 determines whether the power sharing of the PSE device 100 is safe by comparing the remaining power P_surplus and the output power Pout. The system control module 310 can cut off power sharing even if over-discharge may occur, so as to avoid the over-discharge of the PSE device 100 and ensure the normal operation and service life of the PSE device 100.

[0273] Please refer to Figure 25 In some implementations, a power supply connection is established with the PSE device 100 via the input / output port 320, including:

[0274] The power sharing device 300 provides a backup voltage Vstandby to the power sharing daughterboard 50 through the input / output port 320;

[0275] The power sharing device 300 receives a power-on request from the power sharing daughterboard 50;

[0276] The power sharing device 300 responds to the power-on request and turns on the power supply. The power sharing device 300 samples and sends the initial output voltage Vout1, the initial output current Iout1, and the port rated power P_rated to the power sharing daughterboard 50.

[0277] Power sharing device 300 receives its own redundancy requirement P_redundancy from PSE device 100;

[0278] When the redundant power P_redundancy is less than the maximum power P_limit of the corresponding input / output port 320, the power matching is confirmed to be successful and a success message is sent to the power sharing sub-board 50.

[0279] When the redundancy power P_redundancy is greater than or equal to the maximum power P_limit of the corresponding input / output port 320, a notification is sent to adjust the maximum power P_limit of the input / output port 320; and

[0280] Once voltage matching is successful and the power sharing device 300 sends a successful power matching feedback to the power sharing sub-board 50, the power supply connection is established.

[0281] Please refer to Figure 3 , Figure 17 and Figure 18 The control method for the aforementioned power sharing device can be applied to the power sharing device 300. Specifically, the system control module 310 is configured to: control the supply of a standby voltage Vstandby to the power sharing sub-board 50 through the input / output port 320; receive a power-on request from the power sharing sub-board 50; respond to the power-on request and control the power supply to be turned on; control the sampling and sending of the initial output voltage Vout1, the initial output current Iout1, and the port rated power P_rated to the power sharing sub-board 50; receive the redundant power requirement P_redundancy sent by the PSE device 100; when the redundant power P_redundancy is less than the maximum power P_limit of the corresponding input / output port 320, confirm successful power matching and control the feedback of success information to the power sharing sub-board 50; when the redundant power P_redundancy is greater than or equal to the maximum power P_limit of the corresponding input / output port 320, control the notification to adjust the maximum power P_limit of the input / output port 320; and, after successful voltage matching and sending feedback of successful power matching to the power sharing sub-board 50, complete the establishment of the power supply connection.

[0282] Specifically, during the matching process mentioned above, when the power sharing device 300 and the PSE device 100 are physically connected, the system control module 310 controls the backup voltage Vstandby provided to the power sharing daughterboard 50 through the input / output port 320. When the power sharing daughterboard 50 receives the backup voltage Vstandby, the system control module 310 of the power sharing daughterboard 50 starts and completes initialization, and the power sharing device 300 and the PSE device 100 can communicate.

[0283] The system control module 310 receives and responds to the power-on request from the power sharing daughterboard 50 and turns on the power supply to the PSE device 100 (i.e., the power sharing daughterboard 50). At this time, the power sharing device 300 samples and sends an electrical signal to the power sharing daughterboard 50. The specific parameters of this electrical signal include at least the initial output voltage Vout1, the initial output current Iout1, and the port rated power P_rated.

[0284] The system control module 310 also receives the redundancy power requirement P_redundancy sent by the power sharing daughterboard 50 and compares the received redundancy power requirement P_redundancy with the maximum power P_limit of the corresponding input / output port 320. If the system control module 310 determines that the redundancy power requirement P_redundancy is less than the maximum power P_limit, it determines that the power is sufficient to supply power to the PSE device 100, i.e., the power matching is successful, and the system control module 310 sends a success message back to the power sharing daughterboard 50. If the system control module 310 determines that the redundancy power requirement P_redundancy is greater than or equal to the maximum power P_limit, it notifies the user to adjust the maximum power P_limit of the input / output port 320, and if a prompt message appears, it notifies the user to increase the setting value of the maximum power P_limit.

[0285] Once the voltage matching is successful and the power matching is successfully reported to the power sharing sub-board 50, a stable power supply connection is established between the power sharing device 300 and the PSE device 100.

[0286] In the control method and power sharing device 300 provided in this application, the power sharing device 300 and the PSE device 100 first perform voltage matching and power matching, and establish a stable power supply connection after successful matching to carry out formal, high-power bidirectional power supply. At this time, the power sharing device 300 and / or the PSE device 100 have good safety performance, are not prone to damage, and have a long service life.

[0287] Please refer to Figure 3 , Figure 17 and Figure 18In some embodiments, the power sharing device 300 further includes multiple power modules 330, each power module 330 including a first voltage output terminal, a second voltage output terminal, and a Data signal interface. The first voltage output terminal is configured to directly output a first DC voltage after being powered on by an external AC power supply. The second voltage output terminal is configured to output a second DC voltage, the voltage of which is higher than that of the first DC voltage. The Data signal interface is configured to output a Present signal, a PowerGood signal, and a communication signal. The Present signal is used to indicate the connection status of the power module 330, and the PowerGood signal is used to indicate the power supply status of the power module 330. The system control module 310 communicates with the power module 330 via the communication signal to control the on and off of the first DC voltage and / or the second DC voltage.

[0288] Specifically, the power module 330 is a structure in the power-sharing device 300 used to provide power. The power module 330 is connected to an external AC input to provide power to the power-sharing system 1000, which is composed of the power-sharing device 300 and multiple PSE devices 100. For example, the power module 330 is a pluggable power module. In this case, the total output power of the power-sharing device 300 is determined by the number of power modules 330 connected, allowing the power-sharing device 300 to provide power flexibly and with high energy utilization.

[0289] The first voltage output terminal is used to output the first DC voltage, which is a low DC voltage. It can be directly output after the power supply module 330 is connected to an external AC input to supply power to the system control module 310.

[0290] The second voltage output terminal is used to output a second DC voltage. The second DC voltage is a high voltage DC voltage, and its value is within the range of 50-57V (i.e., the PoE standard voltage range). The voltage of the second DC voltage is higher than that of the first DC voltage. The second voltage output terminal participates in the power sharing process of the power sharing system 1000, that is, it can receive power from the PSE device 100 or transmit power to the PSE device 100.

[0291] The data signal interface is used to output signals during various operating processes of the power sharing device 300, specifically for outputting a Present signal, a PowerGood signal, and a communication signal. The Present signal indicates the connection status of the power module 330, and the PowerGood signal indicates the power supply status of the power module 330. The communication signal enables communication between the system control module 310 and the power module 330, and controls the switching on and off of the first DC voltage and / or the second DC voltage. It is understood that the communication signal participates in the bidirectional power transmission process and the communication process between the power sharing device 300 and the PSE device 100 in the above embodiments.

[0292] Therefore, in the power sharing device 300 of this application, the multiple power modules 330 enable the power sharing device 300 to have a flexible and controllable total output power. The power modules 330 realize the communication and control process through the first voltage output terminal, the second voltage output terminal and the Data signal interface. The power sharing device 300 has a good structural rationality and can perform stable power allocation with multiple PSE devices 100.

[0293] Please refer to Figure 3 , Figure 17 and Figure 18 In some embodiments, the power sharing device 300 further includes a first voltage combining module 340 and a second voltage combining module 350. The first voltage combining module 340 is configured to combine the first DC voltages input to each power module 330 and deliver them to each input / output port 320. The second voltage combining module 350 is configured to combine the second DC voltages input to each power module 330 and deliver them to each input / output port 320 respectively.

[0294] Specifically, the first voltage combining module 340 is used to combine the first DC voltages input to each power module 330. After being combined by the first voltage combining module 340, the first DC voltage input to each power module 330 can be flexibly distributed and delivered to each input / output port 320 under the control of the system control module 310, and is transmitted as a backup voltage Vstandby to the power sharing sub-board 50 via each input / output port 320 to instruct the system control module 310 of the power sharing sub-board 50 to start and complete initialization.

[0295] The second voltage combining module 350 is used to combine the second DC voltages input to each power module 330. After being combined by the second voltage combining module 350, the second DC voltages input to the power modules 330 can also be flexibly distributed and delivered to each input / output port 320 under the control of the system control module 310, and used as the power supply voltage during the power expansion process to be transmitted to the power sharing daughterboard 50 through each input / output port 320 to supplement the power of the main board 10.

[0296] Therefore, in the power sharing device 300 of this application, the first voltage combining module 340 and the second voltage combining module 350 are respectively used to combine the first DC voltage and the second DC voltage and transmit them to each input / output port 320, so as to realize the control of the power sharing sub-board 50 and the power supply of the main board 10. The power sharing device 300 has a good structural rationality and can perform stable power distribution with multiple PSE devices 100.

[0297] It is understandable that when the PSE device 100 provides power to the power sharing, the DC voltage input to the PSE device 100 is also combined by the second voltage combining module 350 and sent to each input / output port 320 for power distribution.

[0298] Please refer to Figure 3 , Figure 17 and Figure 18 In some embodiments, each input / output port 320 is provided with an input buck-boost module. The input buck-boost module is configured to boost or buck the input voltage of the PSE device 100 so that the input voltage conforms to the voltage range of the second voltage combining module 350.

[0299] Specifically, the input buck-boost module is located at each input / output port 320. The input buck-boost module is used to regulate the voltage value of the input second voltage combining module 350. For example... Figure 18 As shown, the input buck-boost module corresponding to the first input / output port 320 is displayed. The input buck-boost module is located between the input / output port 320 and the second voltage combiner module 350, and is used to boost or buck the input voltage of the PSE device 100 so that the input voltage of the PSE device 100 meets the voltage range of the second voltage combiner module 350. This ensures that there will be no problem of excessive power causing damage to the second voltage combiner module 350 and the power sharing device 300. The power sharing device 300 has good safety performance and a long service life.

[0300] Please refer to Figure 3 , Figure 17 and Figure 18In some implementations, each input / output port 320 is provided with an input control module, which is configured to control the on / off state of the input power path.

[0301] Specifically, the input control module is located at each input / output port 320. The input control module is used to control the on / off state of the input power path. For example... Figure 18 As shown, the input control module corresponding to the first input / output port 320 is illustrated. This module is positioned between the input / output port 320 and the second voltage combining module 350 to control the conduction and cutoff of the input voltage of the PSE device 100 according to the specific operating process of the power sharing device 300. For example, when the difference between the remaining power P_surplus and the output power Pout of the power sharing sub-board 50 is less than a preset second threshold, the input power path is cut off. In this case, the operation of the power sharing device 300 is well-controllable and has the advantage of good safety.

[0302] Please refer to Figure 3 , Figure 17 and Figure 18 In some implementations, each input / output port 320 is provided with an input protection module, which is configured to cut off the input power path when an input overvoltage or overcurrent is detected.

[0303] Specifically, input protection modules are located at each input / output port 320. These input protection modules provide protection during the power transmission process between the PSE device 100 and the power-sharing device 300. For example... Figure 18 As shown, the input protection module corresponding to the first input / output port 320 is displayed. The input protection module is set between the input / output port 320 and the second voltage combiner module 350, and is used to cut off the input power path when an input overvoltage or overcurrent is detected, so as to ensure that the second voltage combiner module 350 and the power sharing device 300 will not be damaged due to excessive power. The power sharing device 300 has good safety performance and a long service life.

[0304] Please refer to Figure 3 , Figure 17 and Figure 18 In some implementations, each input / output port 320 is provided with an input sampling module, which is configured to monitor the input voltage and input current.

[0305] Specifically, the input sampling module is located at each input / output port 320. The input sampling module is used to monitor the input voltage and input current. For example... Figure 18As shown, the input sampling module corresponding to the first input / output port 320 is configured to monitor the input voltage and input current. This module is located between the input / output port 320 and the second voltage combining module 350. It monitors the input voltage and input current and provides the sampled data to the system control module 310. This allows the system control module 310 to execute the corresponding control method based on the input voltage and input current, enabling the power sharing device 300 to operate normally and achieve flexible power allocation for the PSE device 100.

[0306] Please refer to Figure 3 , Figure 17 and Figure 18 In some embodiments, each input / output port 320 is provided with an output buck-boost module. The output buck-boost module is configured to boost or buck the output voltage of the power sharing device 300 so that the output voltage of the power sharing device 300 matches the input voltage range of the PSE device 100.

[0307] Specifically, the output buck-boost module is located at each input / output port 320. The output buck-boost module is used to regulate the voltage value output by the second voltage combiner module 350. For example... Figure 18 As shown, the output buck-boost module corresponding to the first input / output port 320 is displayed. The output buck-boost module is located between the input / output port 320 and the second voltage combining module 350, and is used to boost or buck the output voltage from the power sharing device 300 to the PSE device 100 so that the output voltage matches the input voltage range of the PSE device 100. This ensures that the PSE device 100 will not be damaged due to excessive power. The power sharing device 300 has good safety performance and can extend the service life of the PSE device 100.

[0308] Please refer to Figure 3 , Figure 17 and Figure 18 In some implementations, each input / output port 320 is provided with an output control module, which is configured to control the on / off state of the output power path.

[0309] Specifically, the output control module is located at each input / output port 320. The output control module is used to control the on / off state of the output power path. For example... Figure 18As shown, the output control module corresponding to the first input / output port 320 is illustrated. This module is positioned between the input / output port 320 and the second voltage combining module 350 to control the on / off switching of the output voltage of the PSE device 100 according to the specific operating process of the power sharing device 300. For example, when the PSE device 100 switches from redundant mode to power sharing mode, the input power path is cut off. In this case, the operation of the power sharing device 300 is well-controllable and offers advantages in safety.

[0310] Please refer to Figure 3 , Figure 17 and Figure 18 In some implementations, each input / output port 320 is provided with an output protection module, which is configured to cut off the output power path when an overvoltage or short circuit is detected in the downstream PSE device 100.

[0311] Specifically, output protection modules are located at each input / output port 320. These output protection modules provide protection during power transmission from the power-sharing device 300 to the PSE device 100. For example... Figure 18 As shown, the output protection module corresponding to the first input / output port 320 is displayed. The output protection module is set between the input / output port 320 and the second voltage combining module 350, and is used to cut off the output power path when an overvoltage or short circuit is detected in the downstream PSE device 100, so as to ensure that the PSE device 100 will not cause damage to the power sharing device 300. The power sharing device 300 has good safety performance and a long service life.

[0312] Please refer to Figure 3 , Figure 17 and Figure 18 In some implementations, each input / output port 320 is provided with a reverse protection module, which is configured to prevent current backflow on the output power path.

[0313] Specifically, the reverse current protection module is installed at each input / output port 320. The reverse current protection module is used to prevent current backflow in the output power path. For example... Figure 18 As shown, the anti-reverse module corresponding to the first input / output port 320 is shown. The anti-reverse module is set between the input / output port 320 and the second voltage combining module 350 and is used to prevent current backflow on the output power path, ensuring that the power sharing device 300 will not be damaged due to current backflow. The power sharing device 300 has good safety performance and a long service life.

[0314] Please refer to Figure 3 , Figure 17 and Figure 18 In some implementations, each input / output port 320 is provided with an output sampling module, which is configured to monitor the output voltage and output current.

[0315] Specifically, the output sampling module is located at each input / output port 320. The output sampling module is used to monitor the output voltage and output current. For example... Figure 18 As shown, the output sampling module corresponding to the first input / output port 320 is displayed. The output sampling module is set between the input / output port 320 and the second voltage combining module 350, and is used to monitor the output voltage and output current. The sampled data is provided to the system control module 310 so that the system control module 310 can execute the corresponding control method according to the output voltage and output current, and the power sharing device 300 can work normally to realize the flexible allocation of power of the PSE device 100.

[0316] Please refer to Figure 3 , Figure 17 and Figure 18 In some embodiments, the power sharing device 300 further includes a management interface 360, which is configured to receive user configuration information, including at least one of port output priority, port enable, port maximum power, total output power limit, and power module 330 redundancy mode. The system control module 310 receives the user configuration information through the management interface 360.

[0317] Specifically, the management interface 360 ​​is an interface for interacting with the user. For example, the management interface 360 ​​is a UART port or an Ethernet port. The management interface 360 ​​can receive user configuration information. This user configuration information is input by the user and is used to control the operating mode or parameter configuration of the power sharing device 300. The user configuration information may include, but is not limited to, one or more of the following: port output priority, port enable, port maximum power, total output power limit, and power module 330 redundancy mode. The system control module 310 is electrically connected to the management interface 360 ​​so that the system control module 310 executes or changes the control method according to the configuration information provided by the management interface 360, enabling the power sharing device 300 to operate normally and achieve flexible power allocation of the PSE device 100.

[0318] Please refer to Figure 3 , Figure 17 and Figure 18In some embodiments, the power module 330 redundancy mode is n = n1 + n2, where n is the total number of connected power modules 330, n1 is the number of main power supply modules, and n2 is the number of redundant power supply modules. The system control module 310 is also configured to: receive the user-set power module 330 redundancy mode configuration via the management interface 360; control the output power of the n1 main power supply modules during normal operation and set the total output power limit P_Totallimit; when m of the n1 main power supply modules are detected to have failed, control at least min(m, n2) of the n2 redundant power supply modules to intervene in power supply; and, after the redundant power supply modules intervene in power supply, recalculate and set the total output power limit P_Totallimit based on the number of currently operating power modules 330.

[0319] Specifically, the power module 330 redundancy mode is a configuration mode for the power module 330. Here, n represents the total number of power modules 330 connected to the power control device, n1 represents the number of power modules 330 that act as the main power supply module, and n2 represents the number of power modules 330 that act as redundant power supply modules.

[0320] More specifically, the main power supply module is the module primarily responsible for power supply functions. When the power sharing device 300 is operating normally, it is connected to an external AC input to provide power to the power sharing device 300 and multiple PSE devices 100, which together form the power sharing system 1000. The redundant power supply module is used as a backup power supply module when the main power supply module malfunctions.

[0321] The system control module 310 can receive the user-configured redundancy mode settings for the power module 330, such as the specific values ​​of n1 and n2, via an electrical connection with the management interface 360. When the power sharing device 300 is operating normally, the system control module 310 controls n1 main power supply modules to supply power to the power sharing device 300. Each of the n1 main power supply modules can output power to the downstream PSE device 100. The maximum total power provided by the n1 main power supply modules that can be output to the PSE device 100 is the total output power limit P_Totallimit.

[0322] When the system control module 310 detects that m out of the n1 main power supply modules have failed and are unable to output power, the system control module 310 controls at least min(m, n2) of the n2 redundant power supply modules to intervene and supply power to the power sharing device 300 so that the power sharing device 300 has the same total output power limit P_Totallimit as when it is working normally, or the maximum total power as large as possible.

[0323] At this time, after the redundant power supply module intervenes to supply power, the system control module 310 recalculates the maximum total power that can be used to output to the PSE device 100 based on the number of power supply modules 330 that are currently working normally, that is, the number of faulty main power supply modules and the number of redundant power supply modules that have intervened, and sets it as the new total output power limit P_Total limit.

[0324] Therefore, the power sharing device 300 of this application has a redundant mode of power module 330. At this time, the system control module 310 can set the total number of connected power modules 330 according to the working status of the power module 330, so as to realize the calculation and setting of the total output power limit P_Totallimit. At this time, the fault tolerance rate of the power sharing device 300 is high, and the power sharing device 300 can easily realize the normal working process, so as to realize the flexible allocation of power of PSE device 100.

[0325] Please refer to Figure 3 , Figure 17 and Figure 18 In some embodiments, the system control module 310 is further configured to: in the redundant mode of the power module 330, set the output total power limit P_Totallimit to the sum of the rated power of n1 main power supply modules by default; when m of the n1 main power supply modules are detected to have failed and m≤n2, maintain the output total power limit P_Totallimit unchanged; and when m of the n1 main power supply modules are detected to have failed and m>n2, adjust the output total power limit P_Totallimit to the sum of the rated power of (n1-m+n2) normally operating power supply modules 330.

[0326] Specifically, when the power sharing device 300 is in the redundant mode of the power module 330, the default calculation method for the total output power limit P_Total limit is to sum the rated power of n1 main power supply modules.

[0327] When the system control module 310 detects that m out of the n1 main power supply modules have failed and m≤n2, the system control module 310 can control the m redundant power supply modules to intervene and supply power to the power sharing device 300 so that the power sharing device 300 has the same total output power limit P_Totallimit as when it is working normally.

[0328] When the system control module 310 detects that m out of n1 main power supply modules have failed and m>n2, the system control module 310 can control m redundant power supply modules to intervene and supply power to the power sharing device 300 so that the power sharing device 300 has the maximum possible total power. At this time, the number of power supply modules 330 participating in the power supply is (n1-m+n2), and the total output power limit P_Totallimit is the sum of the rated power of (n1-m+n2) power supply modules 330 that are currently working normally.

[0329] Therefore, the power sharing device 300 of this application has a redundant mode of power module 330. At this time, the system control module 310 can determine the total output power limit P_Totallimit according to the number of main power supply modules and redundant power supply modules connected. At this time, the fault tolerance rate of the power sharing device 300 is high, and the power sharing device 300 can easily achieve normal operation, so as to realize flexible allocation of power of PSE device 100.

[0330] Please refer to Figure 3 , Figure 17 and Figure 18 In some embodiments, the system control module 310 is further configured to: receive the user-set total output power limit P_Total limit through the management interface 360, and ensure that P_Total limit is less than or equal to the total system input power P_Total in, wherein the total system input power P_Total in is the sum of the rated power of each power module 330 plus the shared power received from the PSE device 100; under the default configuration, set the total output power limit P_Total limit to the sum of the rated power of each power module 330; and monitor the actual total output power in real time, and when the actual total output power approaches or exceeds the total system input power P_Total limit, shut down the output of the lower priority ports in sequence according to the preset port priority.

[0331] Specifically, in the above embodiments, the total output power limit P_Total limit can be set by the user through the management structure, and under the default configuration, the total output power limit P_Total limit is set to the sum of the rated power of each power module 330. At this time, the system control module 310 can communicate with the management interface 360 ​​to receive the user-set total output power limit P_Total limit. The total system input power P_Total in is the maximum total power that the power sharing device 300 can output, which includes the sum of the rated power of each power module 330 in the working state and the shared power received from each PSE device 100 in power sharing mode.

[0332] The system control module 310 controls the total output power limit P_Totallimit to be less than or equal to the total system input power P_Totalin to ensure that the power sharing device 300 does not experience overload. For example, if the user sets the total output power limit P_Totallimit to be greater than the total system input power P_Totalin, the user is prompted, and the upper limit of the total output power limit P_Totallimit is set to the total system input power P_Totalin. At this time, the system control module 310 can monitor the actual total output power of all PSE devices 100 in real time. When the actual total output power approaches or exceeds the total system input power P_Totallimit, the system control module 310 determines that the power sharing device 300 is at risk of overload. In this case, the system control module 310 can sequentially shut down the output of lower priority ports according to preset port priorities.

[0333] Therefore, in the power sharing device 300 of this application, the system control module 310 is used to ensure that P_Total limit is less than or equal to the total system input power P_Totalin, and to promptly shut down the output of the low-priority port when the actual total output power approaches or exceeds the total system input power P_Totallimit, so as to ensure that the power sharing device 300 will not be overloaded, which would lead to a reduction in service life or damage. The power sharing device 300 has good safety performance and can have a long service life.

[0334] Please refer to Figure 3 , Figure 17 and Figure 18 In some embodiments, the system control module 310 is further configured to set the redundancy mode of the power module 330 to "no redundant power supply modules" under default configuration. Specifically, the system control module 310 receives user changes to the redundancy mode configuration of the power module 330 through the management interface 360. When the power sharing device 300 is in its default configuration (e.g., the user has not configured the power sharing device 300, and the power sharing device 300 is in its factory state), the redundancy mode of the power module 330 is set to "no redundant power supply modules," meaning no redundant power supply modules are configured. In this case, the function of the power sharing device 300 is relatively simple.

[0335] Please refer to Figure 3 , Figure 17 and Figure 18 In some embodiments, the power sharing device 300 further includes a gating module 370, which is configured to select and switch communication paths between the system control module 310 and the power module 330 and the PSE devices 100 connected to each input / output port 320.

[0336] Specifically, the gating module 370 is used for selective connection between the system control module 310 and the power supply module 330, and between the system control module 310 and the input / output port 320. Please refer to... Figure 18 For example, the power sharing device 300 includes two gating modules 370, wherein one gating module 370 is connected to the system control module 310 and the power module 330 respectively, so as to select and switch the communication path between the system control module 310 and the power module 330, so as to realize one-to-one communication between the system control module 310 and the power module 330, effectively isolate different communication interfaces, and improve communication efficiency.

[0337] Another gating module 370 is connected to the system control module 310 and the PSE device 100 connected to each input / output port 320 respectively, so as to select and switch the communication path between the system control module 310 and the PSE device 100, so as to realize one-to-one communication between the system control module 310 and the PSE device 100, effectively isolate different communication interfaces, and improve communication efficiency.

[0338] Please refer to Figure 3 , Figure 17 and Figure 18 This application also provides a power sharing system 1000. The power sharing system 1000 includes the PSE device 100 described in any of the above embodiments, or the power sharing device 300 described in any of the above embodiments.

[0339] Specifically, in the above-described practical method, it should be noted that the specific structure and properties of the PSE device 100 and the power sharing device 300 in this embodiment are exactly the same as those in the above-described embodiments, and will not be repeated here. Since the power sharing system 1000 in this application embodiment includes the PSE device 100 and / or the power sharing device 300, it can be understood that the power sharing system 1000 includes at least the same beneficial effects as the PSE device 100 and / or the power sharing device 300.

[0340] In the power sharing system 1000 provided in this application, the PSE device 100 establishes a power supply connection with an input / output port 320 of the power sharing device 300 through the power sharing daughterboard 50, enabling communication and bidirectional current transmission between the PSE device 100 and the power sharing device 300. When the built-in power supply 30 of the PSE device 100 is functioning normally, it is confirmed whether the operating mode of the PSE device 100 is either power extension mode or power sharing mode. In power extension mode, the mainboard 10 of the PSE device 100 can receive power from both the built-in power supply 30 and the power sharing device 300 through the power sharing daughterboard 50. In power sharing mode, the built-in power supply 30 of the PSE device 100 can transmit power to the power sharing device 300 through the power sharing daughterboard 50, allowing the power sharing device 300 to distribute this power. At this time, the PSE device 100 can receive power from the power sharing device 300 to meet the energy demand of the PD device when the output power is insufficient, and can transmit power to the power sharing device 300 when the power is excessive, so that the power sharing device 300 can distribute it to other PSE devices 100 in power sharing mode for efficient energy utilization. This realizes automatic and flexible scheduling, and the power can be precisely allocated with small granularity, which can better cope with various application scenarios of multi-PSE device networking.

[0341] Please refer to Figure 26 This application also provides a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the control method described in any of the above embodiments.

[0342] For example, when a computer program is executed by a processor, the following method is implemented:

[0343] 01: PSE device 100 establishes a power supply connection with one input / output port 320 of power sharing device 300 through power sharing daughterboard 50;

[0344] 03: When the built-in power supply 30 is supplying power normally, confirm the working mode of PSE device 100. The working modes include power extension mode and power sharing mode.

[0345] 05: When the PSE device 100 is in power extension mode, the motherboard 10 can receive power from the built-in power supply 30 and the power sharing device 300 through the power sharing daughterboard 50; and

[0346] 07: When the PSE device 100 is in power-sharing mode, the built-in power supply 30 can transmit power to the power-sharing device 300 through the power-sharing sub-board 50.

[0347] For example, when a computer program is executed by a processor, the following method is implemented:

[0348] 021: When the built-in power supply 30 fails to supply power, the PSE device 100 enters the redundancy mode. In the redundancy mode, the motherboard 10 receives power from the power sharing device 300 through the power sharing daughterboard 50.

[0349] For example, when a computer program is executed by a processor, it can also implement the methods in 022, 0231, 0233, 031, 033, 051, 052, 0531, 054, 055, 056, 0533, 0534, 057, 0581, 0591, 0593, 0583, 071, 072, 073, 074, 075, 0761, 0771, 0773, 0763, 011, 012, 013, 014, 015, 016, 017, 0151, and 0153, as well as the control methods for power-sharing devices.

[0350] In the computer-readable storage medium of this application, the PSE device 100 establishes a power supply connection with the input / output port 320 of the power sharing device 300 through the power sharing daughterboard 50, enabling communication and bidirectional current transmission between the PSE device 100 and the power sharing device 300. When the built-in power supply 30 of the PSE device 100 is functioning normally, it is determined whether the operating mode of the PSE device 100 is either power extension mode or power sharing mode. When the PSE device 100 is operating in power extension mode, its motherboard 10 can receive power from both the built-in power supply 30 and the power sharing device 300 through the power sharing daughterboard 50. When the PSE device 100 is operating in power sharing mode, its built-in power supply 30 can transmit power to the power sharing device 300 through the power sharing daughterboard 50, allowing the power sharing device 300 to distribute this power. At this time, the PSE device 100 can receive power from the power sharing device 300 to meet the energy demand of the PD device when the output power is insufficient, and can transmit power to the power sharing device 300 when the power is excessive, so that the power sharing device 300 can distribute it to other PSE devices 100 in power sharing mode for efficient energy utilization. This realizes automatic and flexible scheduling, and the power can be precisely allocated with small granularity, which can better cope with various application scenarios of multi-PSE device networking.

[0351] In the description of this specification, the references to terms such as "some embodiments," "in one example," "exemplarily," etc., indicate that a specific feature, structure, material, or characteristic described in connection with an embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0352] Any process or method described in the flowchart or otherwise 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 shown or discussed, including substantially simultaneously or in reverse order depending on the function involved, as will be understood by those skilled in the art to which embodiments of this application pertain.

[0353] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application.

Claims

1. A control method for a PSE device, characterized in that, The PSE device is connected to the input / output ports of the power sharing device, and the PSE device includes a motherboard, a power sharing daughterboard, and a built-in power supply; the control method includes: The PSE device establishes a power supply connection with the input / output ports of the power sharing device through the power sharing sub-board; When the built-in power supply is normal, confirm the operating mode of the PSE device, which includes power extension mode and power sharing mode; When the PSE device is in the power extension mode, the motherboard can receive power from the built-in power supply and the power sharing device through the power sharing daughterboard; and When the PSE device is in the power-sharing mode, the built-in power supply can transmit power to the power-sharing device through the power-sharing subboard.

2. The control method according to claim 1, characterized in that, The operating mode also includes a redundancy mode, and the control method further includes: When the built-in power supply fails, the PSE device enters the redundancy mode. In the redundancy mode, the motherboard receives power from the power sharing device through the power sharing daughterboard. Detect whether the power supply status of the built-in power supply has changed; When the built-in power supply changes to normal power supply, proceed to the step of confirming the operating mode of the PSE device; and If the built-in power supply is still malfunctioning, the system remains in the redundant mode.

3. The control method according to claim 1, characterized in that, When the built-in power supply is normal, confirming the operating mode of the PSE device includes: When the rated power P1 of the built-in power supply is less than the external power supply budget PoE_budget of the PSE device, the operating mode of the PSE device is confirmed to be the power extension mode; and When the rated power P1 of the built-in power supply is greater than the external power supply budget PoE_budget of the PSE device, and the difference between the rated power P1 and the external power supply budget PoE_budget is greater than a preset first threshold, the operating mode of the PSE device is confirmed to be the power sharing mode.

4. The control method according to claim 3, characterized in that, In the power extension mode, it also includes: The power sharing sub-board obtains the supplementary power P_request required by the PSE device based on the rated power P1 and the external power supply budget PoE_budget, and sends the supplementary power P_request to the power sharing device; The power sharing sub-board receives the maximum power P_limit that its corresponding input / output port can provide, fed back by the power sharing device. If the maximum power P_limit is greater than the supplementary power P_request, then the power-sharing subboard maintains the power expansion ready state; and When the total power consumption Pall of the PD devices connected to the PSE device exceeds the rated power P1, the motherboard receives the power supplied by the power sharing device and the rated power P1 supplied by the built-in power supply through the power sharing sub-board.

5. The control method according to claim 4, characterized in that, In the power extension mode, it also includes: When the total power consumption Pall of the PD devices connected to the PSE device becomes less than or equal to the rated power P1, the motherboard changes to receive power supplied by the built-in power supply through the power-sharing subboard; and If the total power consumption (Pall) of the PD devices connected to the PSE device exceeds the external power supply budget (PoE_budget), the motherboard controls the disconnection of power supply to some of the PD devices; and / or... If the maximum power P_limit is less than the supplementary power P_request, then the motherboard receives the adjustment notification sent by the power sharing device through the power sharing sub-board; and In response to the adjustment notification, the motherboard adjusts the external power supply budget PoE_budget to a value no greater than (P_limit+P1).

6. The control method according to claim 4, characterized in that, In the power extension mode, it also includes: Check whether the power supply status of the built-in power supply is normal; When the built-in power supply is normal, check whether the external power supply budget PoE_budget has changed; If the external power supply budget PoE_budget remains unchanged, the power sharing sub-board maintains the power expansion ready state. When the external power supply budget PoE_budget changes, the step of returning to confirm the operating mode of the PSE device is executed; and When the built-in power supply fails, the PSE device returns to redundant mode.

7. The control method according to claim 3, characterized in that, The PSE device also includes an output switch, and in the power-sharing mode, the control method further includes: The power sharing sub-board obtains the remaining power P_surplus of the PSE device based on the rated power P1 and the external power supply budget PoE_budget, and sends the remaining power P_surplus to the power sharing device; When the input voltage output by the PSE device to the corresponding input / output port meets the preset range, the power sharing sub-board controls the output switch to turn on, and outputs part or all of the remaining power P_surplus generated by the built-in power supply to the power sharing device to perform power sharing; The power sharing subboard monitors its output power Pout in real time; and When the difference between the remaining power P_surplus and the output power Pout is less than a preset second threshold, the power sharing sub-board controls the output switch to turn off and stop power sharing. When the difference between the remaining power P_surplus and the output power Pout is greater than the second threshold, or during the power sharing process, the power supply status of the built-in power supply is checked to see if it is normal. When the built-in power supply is normal, check whether the external power supply budget PoE_budget has changed; When the external power supply budget PoE_budget remains unchanged, the power sharing sub-board controls the output switch to be turned on, and outputs part or all of the remaining power P_surplus generated by the built-in power supply to the power sharing device to perform the power sharing steps; When the power budget PoE_budget changes, return to the step of confirming the operating mode of the PSE device; When the built-in power supply fails, the PSE device returns to redundant mode.

8. The control method according to any one of claims 1-7, characterized in that, The PSE device establishes a power supply connection with one input / output port of the power sharing device through the power sharing daughterboard, including: After the power sharing subboard receives the standby voltage Vstandby provided by the power sharing device through its shared power input / output port, the system control module of the power sharing subboard starts up and completes initialization. The power sharing sub-board sends a power-on request to the power sharing device; After the power sharing device responds to the power-on request and turns on the power supply, the power sharing sub-board receives the initial output voltage Vout1, the initial output current Iout1, and the port rated power P_rated sampled and sent by the power sharing device. The control module of the power sharing sub-board collects the input voltage Vin1 and input current Iin1 at the input / output port of the shared power supply. Based on the initial output voltage Vout1, the initial output current Iout1, the port rated power P_rated, the input voltage Vin1, and the input current Iin1, the power sharing sub-board performs voltage matching; The PSE device sends its own redundant power requirement P_redundancy to the power sharing device so that the power sharing device can perform power matching. After successful voltage matching and receiving feedback from the power sharing device confirming successful power matching, the power sharing sub-board controls its input switch to open, thus establishing a power supply connection. The target output voltage Vout2 is obtained based on the initial output voltage Vout1, the input voltage Vin1, the input current Iin1, and the port rated power P_rated; and If the target output voltage Vout2 is within the acceptable input voltage range [Vpse1, Vpse2] of the PSE device, then the power sharing device is requested to adjust its output voltage to Vout2, and the voltage matching is confirmed to be successful.

9. A PSE device, characterized in that, It includes a motherboard, a built-in power supply, and a power-sharing sub-board, wherein the built-in power supply is connected to the power-sharing sub-board, and the motherboard is connected to the power-sharing sub-board; The power-sharing subboard is configured as follows: Establish a power supply connection with one of the input / output ports of the power sharing device; When the built-in power supply is normal, confirm the operating mode of the PSE device, which includes power extension mode and power sharing mode; When the PSE device is in the power extension mode, the motherboard is able to receive power from the built-in power supply and the power sharing device through the power sharing subboard; and When the PSE device is in the power-sharing mode, the built-in power supply can transmit power to the power-sharing device through the power-sharing subboard.

10. A control method for a power-sharing device, characterized in that, The power sharing device includes multiple input / output ports; the control method includes: A power supply connection is established with the PSE device through the input / output ports. The PSE device includes a motherboard, a power sharing daughterboard and a built-in power supply. The operating modes of the PSE device include power extension mode and power sharing mode. When the PSE device is in the power extension mode, the power sharing device can power the motherboard through the power sharing daughterboard, thereby merging the power supply to the motherboard with the power supply provided by the built-in power supply; and When the PSE device is in the power-sharing mode, the power-sharing device is able to receive power transmitted by the built-in power supply through the power-sharing daughterboard.

11. The control method according to claim 10, characterized in that, The operating mode of the PSE device also includes a redundancy mode, and the control method further includes: When the built-in power supply fails and the PSE device is in the redundant mode, the power sharing device supplies power to the main board through the power sharing daughterboard. Continuously communicate with the PSE device through the input / output port to obtain the power supply status of the built-in power supply monitored by the power sharing subboard, and confirm whether to maintain the redundancy mode and maintain the power-ready state; and When the built-in power supply is still malfunctioning, control the power supply to the motherboard of the PSE device through the input / output port.

12. The control method according to claim 10, characterized in that, When the PSE device is in the power extension mode, it also includes: Receive the supplementary power P_request sent by the power sharing sub-board; The maximum power P_limit that can be provided by the input / output port connected to the power-sharing subboard is fed back. If the maximum power P_limit is greater than the supplementary power P_request, then the power sharing device is in a power expansion ready state; When the total power consumption Pall of the PD devices connected to the PSE device exceeds the rated power P1 of the built-in power supply, the power-sharing device supplies power to the main board through the power-sharing subboard, so as to combine it with the rated power P1 supplied by the built-in power supply through the power-sharing subboard; and If the maximum power P_limit is less than the supplementary power P_request, the power sharing device sends an adjustment notification to the main board through the power sharing sub-board, so that the main board responds to the adjustment notification and adjusts the external power budget PoE_budget of the PSE device to a value no greater than (P_limit+P1).

13. The control method according to claim 10, characterized in that, When the PSE device is in the power-sharing mode, the control method further includes: The power sharing device receives the remaining power P_surplus of the PSE device sent by the power sharing sub-board; When the input voltage at the input / output port meets a preset range, the power sharing device receives part or all of the remaining power P_surplus generated by the built-in power supply through the power sharing sub-board to perform power sharing; When the difference between the remaining power P_surplus and the output power Pout of the power sharing sub-board is less than a preset second threshold, the power sharing device stops power sharing.

14. The control method according to any one of claims 10-13, characterized in that, The establishment of a power supply connection with the PSE device through the input / output port includes: The power sharing device provides a backup voltage Vstandby to the power sharing sub-board through its input / output ports. The power sharing device receives a power-on request from the power sharing sub-board; The power sharing device responds to the power-on request and turns on the power supply. The power sharing device samples and sends the initial output voltage Vout1, the initial output current Iout1, and the port rated power P_rated to the power sharing sub-board. The power sharing device receives its own redundancy requirement P_redundancy from the PSE device; When the redundant power P_redundancy is less than the maximum power P_limit of the corresponding input / output port, the power matching is confirmed to be successful, and a success message is sent back to the power sharing sub-board. When the redundancy power P_redundancy is greater than or equal to the maximum power P_limit of the corresponding input / output port, a notification is sent to adjust the maximum power P_limit of the input / output port; and Once voltage matching is successful and the power sharing device sends a successful power matching feedback to the power sharing sub-board, the power supply connection is established.

15. A power-sharing device, characterized in that, It includes a system control module and multiple input / output ports; the system control module is configured to establish a power supply connection with the PSE device through the input / output ports; When the PSE device is in power extension mode, the system control module is configured to control the power supply to the motherboard of the PSE device through the input / output port, so as to combine with the built-in power supply of the PSE device; When the PSE device is in power-sharing mode, the system control module is configured to control the reception of power transmitted from the PSE device's built-in power supply through the input / output port.

16. The power sharing device according to claim 15, characterized in that, Also includes: Multiple power modules, each power module comprising: The first voltage output terminal is configured to directly output the first DC voltage after the external AC power supply is powered on; The second voltage output terminal is configured to output a second DC voltage, wherein the voltage of the second DC voltage is higher than the voltage of the first DC voltage; and The data signal interface is configured to output a Present signal, a PowerGood signal, and a communication signal. The Present signal is used to indicate the connection status of the power module, and the PowerGood signal is used to indicate the power supply status of the power module. The system control module communicates with the power module through the communication signal to control the opening and closing of the first DC voltage output terminal and / or the second DC voltage output terminal. A first voltage combining module is configured to combine the first DC voltages input to each of the power modules and supply them to each of the input / output ports; and The second voltage combining module is configured to combine the second DC voltage input to each of the power modules and send them to each of the input / output ports respectively.

17. The power sharing device according to claim 16, characterized in that, Each of the aforementioned input / output ports is configured with: The input boost / buck module is configured to boost or buck the input voltage of the PSE device so that the input voltage conforms to the voltage range of the second voltage combining module; and / or, The input control module is configured to control the on / off state of the input power path; and / or, The input protection module is configured to cut off the input power path when an input overvoltage or overcurrent is detected. And / or, The input sampling module is configured to monitor the input voltage and input current; and / or, The output buck-boost module is configured to boost or buck the output voltage of the power-sharing device, so that the output voltage of the power-sharing device matches the input voltage range of the PSE device; and / or, The output control module is configured to control the on / off state of the output power path; and / or, The output protection module is configured to disconnect the output power path when an overvoltage or short circuit is detected in the downstream PSE device; and / or, The reverse current protection module is configured to prevent reverse current flow on the output power path; and / or, The output sampling module is configured to monitor the output voltage and output current.

18. The power sharing device according to claim 15, characterized in that, It also includes a management interface configured to receive user configuration information, which includes at least one of port output priority, port enable, port maximum power, total output power limit, and power module redundancy mode; wherein, the system control module receives the user configuration through the management interface; the power module redundancy mode is n = n1 + n2, where n is the total number of connected power modules, n1 is the number of main power supply modules, and n2 is the number of redundant power supply modules; The system control module is also configured to: The management interface receives the power module redundancy mode configuration set by the user. During normal operation, the output power of n1 main power supply modules is controlled, and the total output power limit P_Totallimit is set. When m out of n1 main power supply modules are detected to have failed, control at least min(m, n2) of the n2 redundant power supply modules to intervene and supply power. After the redundant power supply module comes into power, the total output power limit P_Totallimit is recalculated and set based on the number of power supply modules that are currently working normally. In the power module redundancy mode, the default total output power limit P_Totallimit is set to the sum of the rated power of n1 main power supply modules; When m out of n1 main power supply modules are detected to be faulty and m≤n2, the total output power limit P_Totallimit is kept unchanged. When m out of n1 main power supply modules are detected to be faulty and m>n2, the total output power limit P_Totallimit is adjusted to the sum of the rated power of (n1-m+n2) normally operating power supply modules; The system receives the user-set total output power limit P_Total limit through the management interface and ensures that P_Total limit ≤ total system input power P_Totalin, wherein the total system input power P_Totalin is the sum of the rated power of each power module plus the shared power received from the PSE device. Under the default configuration, the total output power limit P_Totallimit is set to the sum of the rated power of each power module; The system monitors the actual total output power in real time. When the actual total output power approaches or exceeds the system input total power P_Totallimit, it sequentially shuts down the output of lower priority ports according to preset port priorities. By default, the power module redundancy mode is set to not leave redundant power supply modules.

19. A power-sharing system, characterized in that, include: The PSE device of claim 9; and / or the power sharing device of any one of claims 15-18.

20. A computer-readable storage medium having a computer program stored thereon, characterized in that, When the program is executed by the processor, it implements the control method according to any one of claims 1-8 and 10-15.

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