Power supply system, electronic equipment and server

Abstract

The invention discloses a power supply system, electronic equipment and a server, and relates to the technical field of power supply, a plurality of power switch devices connected in parallel are arranged in the power supply system, independent driving control of the power switch devices is realized by an isolation driving module, and a control signal is generated according to preset logic in combination with a control module; and large-current on-off control of a computational node level is realized. Compared with conventional devices such as eFuse, the power switch device has the advantages that the hardware cost and the occupied space are reduced, the signal anti-interference capability is improved through an isolation driving mode, and quick and reliable power-off control is realized in cooperation with a control module. Therefore, the technical problems of high cost, slow response and limited space in the prior art are solved, and the technical effect of meeting the independent power-off requirement of the computing node in the upgrading and maintenance process is achieved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of power supply, and in particular to a power supply system, an electronic device and a server. BACKGROUND

[0002] With the continuous growth of data center scale and computing power demand, the power supply architecture of servers has evolved from decentralized power supply to centralized power supply. Early data centers usually configure independent AC-DC (Alternating Current-Direct Current) power supplies in each server node, which has problems such as low power supply efficiency, poor space utilization, and high maintenance cost. The centralized power supply mode converts alternating current into direct current high voltage through a cabinet-level power supply conversion unit, and then distributes it to each node for use, which significantly improves the overall power supply efficiency and becomes the current mainstream solution.

[0003] In recent years, artificial intelligence technology has developed rapidly, driving server nodes to evolve to higher power levels, among which 10kW-level computing nodes have become the core units of high-end data centers. Such computing nodes often integrate multiple high-performance graphics processors and high-speed memories, which puts forward more stringent requirements on the capacity, stability and control flexibility of the power supply system. Although the current centralized power supply standard defines a 48V to 54V direct current high voltage power supply architecture that can meet the high power transmission demand, it still lacks a perfect technical solution for computing node-level power supply control.

[0004] For 10kW-level computing nodes, during system upgrade or maintenance, it is necessary to achieve fast and reliable power-off control, avoiding both arc and overcurrent risks, and not relying on internal logic control units. At the same time, in order to reduce operation and manufacturing costs, it is also required that the power-off control module has the characteristics of compact structure and controllable cost. Therefore, it is urgent to propose a new power supply control scheme to ensure the safe operation of high-power nodes while improving the flexibility and economy of the system. SUMMARY

[0005] The present application provides a power supply system, an electronic device and a server to at least solve the problems of high cost, slow response and limited space in the related art.

[0006] The application provides a power supply system, comprising: a plurality of parallel power switch devices, input ends of the power switch devices being connected with a copper busbar, and output ends of the power switch devices being connected with power bricks in a computing node; an isolated driving module, output ends of the isolated driving module being connected with control ends of the power switch devices, and the isolated driving module being configured to drive the corresponding power switch module to turn on or turn off in an isolated manner in response to a control signal; and a control module, an output end of the control module being connected with input ends of the isolated driving module, and the control module being configured to generate a plurality of control signals at preset time intervals in sequence to make the plurality of power switch devices turn on in sequence when the computing node is continuously detected to be accessed within a preset time period, and a required current of the computing node is greater than a first preset threshold, and a power supply current on the copper busbar is greater than a second preset threshold; otherwise, the plurality of power switch devices are controlled to turn off.

[0007] The application further provides an electronic device comprising the power supply system.

[0008] The application further provides a server comprising the power supply system.

[0009] According to the application, the plurality of parallel power switch devices are arranged in the power supply system, and the independent driving control of the power switch devices is realized by the isolated driving module, and the control module generates the control signal according to the target requirement, thereby realizing the large-current on-off control at the computing node level. Compared with the conventional devices such as eFuse, the power switch device reduces the hardware cost and the space occupation, improves the signal anti-interference ability by the isolated driving mode, and realizes the rapid and reliable power-off control in cooperation with the control module. It can be seen that the scheme of the application solves the technical problems of high cost, slow response and space limitation in the related art, and achieves the technical effect of meeting the independent power-off requirement of the computing node in the upgrading and maintenance process. BRIEF DESCRIPTION OF DRAWINGS

[0010] In order to more clearly illustrate the embodiments of the application, the drawings needed in the embodiments will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the application, and other drawings can be obtained by those skilled in the art without creative labor.

[0011] Figure 1 An architecture diagram of a power supply system provided by the embodiments of the application.

[0012] Figure 2 An architecture diagram of a soft-start circuit provided by the embodiments of the application. DETAILED DESCRIPTION

[0013] With reference to the drawings of the embodiments of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present application.

[0014] It should be noted that, in the description of the present application, the terms "comprise", "contain" or any other variants thereof are intended to cover non-exclusive inclusion, so that the process, method, article or equipment comprising a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such process, method, article or equipment. The terms "first", "second" and the like in the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence.

[0015] In order for those skilled in the art to better understand the present application, the present application will be further described in detail below with reference to the drawings and specific embodiments.

[0016] As Figure 1 In a first aspect, the present application provides a power supply system, comprising: a plurality of parallel power switch devices 11, the input end of the power switch device 11 being connected with a copper busbar, and the output end of the power switch device 11 being connected with a power brick in a computing node; an isolation driving module 12, the output end of which is connected with the control end of each power switch device 11, and the isolation driving module 12 is configured to drive the corresponding power switch module to turn on or turn off in an isolated manner in response to a control signal; a control module 13, the output end of which is connected with the input end of the isolation driving module 12, and the control module 13 is configured to generate a plurality of control signals in a preset time interval in sequence to make the plurality of power switch devices 11 turn on in sequence with a delay, when it is continuously detected within a preset time period that there is a computing node connected and the demand current of the computing node is greater than a first preset threshold, and the power supply current on the copper busbar is greater than a second preset threshold; otherwise, the plurality of power switch devices 11 are controlled to turn off.

[0017] The power supply system of the present embodiment realizes the on-off control of the large-current power supply path by arranging a plurality of parallel power switch devices 11 between the copper busbar and the power brick in the computing node. The plurality of power switch devices 11 can share the load during current transmission, thereby ensuring stable transmission in a high-current power supply scenario. The power switch device 11 in the present embodiment serves as the core on-off control unit and undertakes the switching function of the power supply link.

[0018] The isolation driving module 12 of the embodiment is arranged between the control module 13 and the power switch device 11, and is used to transmit the control signal output by the control module 13 to the control end of the power switch device 11 in an isolated manner. Since the power supply system is in a high-voltage and large-current environment, the isolation driving module 12 can separate the signal link and the power link from each other in structure, so that the control signal can be prevented from being affected by electromagnetic interference or transient impact during transmission. The embodiment can directly act on the control end of the power switch device 11 by outputting the corresponding driving signal through the isolation driving module 12, so as to realize the reliable conduction and turn-off of the power switch device 11.

[0019] The control module 13 of the embodiment can generate the control signal according to the target demand and transmit the control signal to the isolation driving module 12 as the control core of the power supply system. The target demand can be derived from the host computer, the server running state or the maintenance instruction. After receiving the target demand, the control module 13 generates the corresponding control signal according to the preset logic. Specifically, the logic for generating the control signal can be that the control module 13 continuously detects that a computing node is connected within a preset time period, and the demand current of the computing node is greater than a first preset threshold, and the power supply current on the copper bus is greater than a second preset threshold, and generates a plurality of control signals at a preset time interval in turn, so that the plurality of power switch devices 11 are sequentially turned on with a delay; otherwise, the plurality of power switch devices 11 are turned off. It should be understood that in the embodiment, the control module 13 does not simply respond to a single event, but continuously monitors a composite logic composed of three conditions of node connection, local high demand and system total load; only when the three conditions are met at the same time within a preset time, it is determined as a real and safe high-power starting request, and then an orderly delay power-on strategy is executed to balance the inrush current and power supply demand; the absence of any condition will trigger the turn-off, ensuring the safety and stability of the system. The target demand is explicitly defined as three detectable physical quantities (node connection signal, demand current and bus current) and their logical relationship, and the timing control is introduced, so that the plurality of power switch devices 11 are sequentially turned on with a delay to solve the inrush current problem. A protection mechanism for continuous detection within a preset time period is set to avoid false triggering. In the embodiment, the cooperation of the control module 13 and the isolation driving module 12 enables the power supply system to flexibly control the power switch device 11 according to the actual running condition in different working stages.

[0020] In the power-on process, the control module 13 of the embodiment generates a control signal according to the target demand, which is transmitted to the control end of the power switch device 11 through the isolation driving module 12. The power switch device 11 is thus turned on, and the electric energy on the copper bus is smoothly transmitted to the power brick to provide working power supply for the computing node. In the power-off process, the control module 13 of the embodiment generates an off signal, which is transmitted to the power switch device 11 through the isolation driving module 12, so that the power switch device 11 is switched from the on state to the off state, thereby cutting off the current transmission path between the copper bus and the power brick, and realizing independent power-off control. In addition, the control module 13 in the embodiment can also generate a control signal for a single power switch device 11 to control the on-off of the single power switch device 11.

[0021] It should also be understood that a plurality of computing nodes are usually included in a server, and at least one power brick is included in each computing node. The power supply system described in the embodiment is for one computing node. If there are multiple computing nodes, a corresponding power supply system is provided for each computing node, and independent power-on and power-off control of each computing node can be realized.

[0022] The power supply system of the embodiment realizes clear functional division through the link of the power switch device 11, the isolation driving module 12, and the control module 13. The power switch device 11 directly undertakes current on-off, the isolation driving module 12 ensures the isolation and integrity of the signal transmission process, and the control module 13 generates a control signal according to the target demand. This structure enables the power supply system to realize stable and rapid on-off control while maintaining high current transmission capacity. The power switch device 11 can be but is not limited to a MOS (Metal-Oxide-Semiconductor Field-Effect Transistor) tube.

[0023] In summary, the power supply system of the embodiment takes a plurality of power switch devices 11 as the core in the architecture, forms a synergistic relationship with the isolation driving module 12 and the control module 13, and can provide independent power supply control for the computing node under the centralized power supply architecture of the data center server. The embodiment ensures the stability of the power supply link under large current working conditions and can realize flexible management of the power supply state according to external target demand.

[0024] In an exemplary embodiment, the control module 13 comprises a logic device, an input end of the logic device is connected with the trigger module, an output end of the logic device is connected with an input end of the isolation driving module 12, the logic device is configured to generate corresponding control signals in a preset time interval and send to the isolation driving module 12 in response to the trigger signal sent by the trigger module, and continuously detect that a computing node is accessed and a required current of the computing node is greater than a first preset threshold value, and a power supply current on the copper bus is greater than a second preset threshold value within a preset time period, so as to sequentially delay the turn-on of the plurality of power switch devices 11; otherwise, the plurality of power switch devices 11 are controlled to be turned off.

[0025] In the embodiment, the control module 13 comprises a logic device, which functions to respond to and process the trigger signal from the trigger module. When the trigger module outputs the trigger signal under certain conditions, the trigger signal is received by the logic device. The logic device can analyze the trigger signal according to a preset logic rule, so as to generate a corresponding control signal according to the preset logic. The logic device structurally undertakes the conversion function from the input signal to the control signal, so that the power supply system has the ability to realize control according to the trigger condition. The logic device can be, but is not limited to, an FPGA (Field-Programmable Gate Array).

[0026] After the logic device receives the trigger signal output by the trigger module, the internal logic circuit of the logic device processes the trigger signal to determine whether the trigger signal meets the conditions for on-off control. When the logic device confirms that the trigger signal is valid, and determines that the server system meets the conditions that a computing node is continuously detected to be accessed and a required current of the computing node is greater than a first preset threshold value, and a power supply current on the copper bus is greater than a second preset threshold value within a preset time period, the logic device generates corresponding control signals in a preset time interval at the output end. The control signals carry operation instructions required to be executed by the power switch device 11. In this way, the logic device converts the external trigger behavior into a control signal at the circuit level, so as to realize the actual operation of the power supply system.

[0027] The output end of the logic device is connected with the input end of the isolation driving module 12. When the logic device generates the control signal, the signal is transmitted to the isolation driving module 12. After receiving the control signal, the isolation driving module 12 can transmit and act on the control end of the power switch device 11. In the embodiment, the connection between the logic device and the isolation driving module 12 ensures that the trigger signal can be transmitted to the power switch device 11 after being processed by the logic device, so as to ensure that the control link of the entire power supply system is coherent and effective.

[0028] Through the above structure, this embodiment realizes a signal transmission path from the trigger module to the logic device and then to the isolation drive module 12. In this path, the logic device performs signal parsing and conversion, ensuring that the trigger signal output by the trigger module can be converted into a control signal recognizable by the power switch device 11. When the trigger module is in the triggered state, the logic device immediately outputs the corresponding control signal according to this state, and acts on the power switch device 11 through the isolation drive module 12, thereby controlling the power supply on / off. This embodiment, through the configuration of the logic device, enables the control module 13 to independently complete the signal processing and control command generation process.

[0029] In one exemplary embodiment, the system further includes an optical fiber transmitter, the input of which is connected to the output of the logic device; the isolation drive module 12 includes an isolation drive device and an optical fiber receiver; the input of the optical fiber receiver is connected to the output of the optical fiber transmitter via an optical fiber, the output of the optical fiber receiver is connected to the input of the isolation drive device, and the output of the isolation drive device is connected to the control terminal of each power switching device 11.

[0030] In this embodiment, an optical fiber transmitter is provided to convert the electrical signals output by the logic device into optical signals. Since the control signals generated by the logic device are essentially electrical signals, direct transmission may be affected by electromagnetic interference in the power supply environment. However, after the optical fiber transmitter completes the electrical-to-optical conversion, the signal is transmitted in optical form, maintaining stability and reliability during transmission. In this embodiment, the optical fiber transmitter performs the signal conversion function, enabling the control signals generated by the logic device to enter the subsequent transmission link in the form of optical signals.

[0031] In this embodiment, the isolation driver module 12 includes an optical fiber receiver ( Figure 1 (Not shown in the image) The function of the fiber optic receiver is to receive optical signals transmitted through optical fibers and convert them back into electrical signals. As a signal receiving end, the fiber optic receiver ensures that optical signals in the fiber optic link can be converted back into electrical signals upon arrival, thus providing input conditions for subsequent processing by isolated drive devices. The presence of the fiber optic receiver allows for the complete reception and conversion of optical signals in an isolated environment.

[0032] In this embodiment, the isolation drive module 12 further includes an isolation drive device. This device receives an electrical signal from the fiber optic receiver and generates a corresponding drive voltage or drive current based on the signal. The internal circuitry of the isolation drive device can convert the input signal into a drive signal that can directly control the power switching device 11 while ensuring electrical isolation between the input and output. This embodiment achieves electrical isolation between the signal and power circuits through the isolation drive device, thereby ensuring the signal transmission stability of the power supply system under high current conditions.

[0033] In a specific embodiment, the isolation driving device can output two different driving voltages after receiving the control signal, i.e. a turn-on voltage of +12V and a turn-off voltage of -8V. When the isolation driving device outputs the turn-on voltage of +12V, the control terminal of the power switching device 11 is affected, so that the power switching device 11 can quickly enter the conduction state, ensuring the normal establishment of the large-current power supply link. In the turn-off process, the isolation driving device outputs the turn-off voltage of -8V, which can completely discharge the gate of the power switching device 11, eliminate the mis-conduction phenomenon caused by the Miller effect, and ensure that the power switching device 11 is in the off state when turned off.

[0034] In the embodiment, the combination of the optical fiber transmitter, the optical fiber receiver and the isolation driving device constitutes a complete optical fiber isolation transmission path. The electrical signal generated by the logic device is converted into an optical signal at the optical fiber transmitter, restored into an electrical signal at the optical fiber receiver after transmission via the optical fiber, and finally converted into a driving signal by the isolation driving device. In this way, the embodiment realizes the isolation and transmission of signals by using optical fibers in the control link of the power supply system, so that the signal generated by the logic device can reliably act on the power switching device 11 in an isolated manner.

[0035] In an exemplary embodiment, the isolation driving device is a magnetic isolation driving device.

[0036] In the embodiment, the isolation driving device is a magnetic isolation driving device, which transmits the control signal between the input end and the output end through the magnetic coupling structure, realizes reliable transmission of the signal while maintaining electrical isolation. The magnetic isolation driving device has strong anti-interference ability in a high-voltage and large-current working environment, which can ensure that the control signal is not affected by the transient voltage and current change of the power loop. For example, the isolation driving device can use a device with an internal integrated magnetic coupling channel, which can stably output the driving voltage under high-speed switching conditions, meeting the driving requirements of the power switching device 11 in the conduction and turn-off processes. The magnetic isolation driving device can be, but is not limited to, a transformer type device.

[0037] In an exemplary embodiment, the trigger module includes a key trigger module 15, which multiplexes at least two function keys on the server; the logic device stores the corresponding relationship between the trigger signal corresponding to the combined operation mode of the two function keys and the on-off control logic of each power switching device 11.

[0038] In this embodiment, the trigger module includes a key trigger module 15, which multiplexes at least two function keys on the server. When the key trigger module 15 receives a user operation, it generates a corresponding trigger signal carrying the state information of the key, indicating whether the key is pressed and the combination of the pressed keys. Through the design of the trigger module, operation information for the control of the power switching device 11 can be obtained without changing the original key function.

[0039] The logic device internally stores the correspondence between the combination operation mode of the two function keys and the on-off control logic of the power switching device 11. When the trigger module detects that the key is pressed, the logic device will analyze the trigger signal and generate the corresponding control signal according to the pre-stored combination operation mode. The logic device realizes the mapping from the trigger signal to the control command of the power switching device 11 through internal logic judgment, so that the power supply system can perform on-off control according to the key operation.

[0040] The logic device can distinguish between single key operation and combination key operation. When a certain function key is pressed alone, the logic device will recognize it as a normal function operation and will not trigger the control of the power switching device 11; when the trigger signal corresponding to the combination operation of two function keys is detected, the logic device will generate a control signal for controlling the power switching device 11 to turn off or turn on. Through this judgment mechanism, the logic device realizes the multiplexing of key functions while ensuring that the control behavior of the power switching device 11 only occurs under specific combination operations.

[0041] In this embodiment, the control signal is generated by the logic device and directly acts on the control end of the power switching device 11, causing the power switching device 11 to turn on or turn off according to the trigger logic of the combination operation. Through the setting of the logic device, this embodiment can realize the on-off control of the power switching device 11 without the need to add additional operation interfaces, and realize the operation mapping and signal processing function between the key trigger module 15 and the power supply system.

[0042] In an exemplary embodiment, the key trigger module 15 multiplexes the unit identification key and the power key on the server; the unit identification key is configured to trigger the identification state switching when pressed alone; the power key is configured to send the power-on / off signal to the baseboard management controller when pressed alone; the logic device is configured to generate the control signal for controlling the turn-off or turn-on of all the power switching devices 11 at the preset time interval in sequence when the trigger signal corresponding to the combined operation of pressing the unit identification key and the power key is detected simultaneously and the demand current of the computing node is greater than the first preset threshold and the power supply current on the copper bus is greater than the second preset threshold within the preset time period, so that the multiple power switching devices 11 are turned on in sequence with a delay; if the trigger signal corresponding to the combined operation of pressing the unit identification key and the power key is detected again during the power supply process, the control signal for controlling the turn-off of the multiple power switching devices 11 is generated. That is, the function keys at least include the unit identification key and the power key.

[0043] In the embodiment, the key trigger module 15 multiplexes the unit identification key and the power key on the server. The unit identification key can trigger the identification state switching when pressed alone, and the power key can send the power-on / off signal to the baseboard management controller when pressed alone. Through the single operation of the key, the original identification switching function and the power-on / off function can be executed without affecting the control logic of the power switching device 11.

[0044] The logic device identifies the combined operation of the unit identification key and the power key. After receiving the trigger signal from the key trigger module 15, the logic device judges according to the combined operation mode stored in the internal storage. When the logic device detects the trigger signal of pressing the unit identification key and the power key at the same time, the logic device determines that the trigger signal is valid, and further judges whether the conditions of continuously detecting the access of the computing node and the demand current of the computing node being greater than the first preset threshold, and the power supply current on the copper bus being greater than the second preset threshold within the preset time period are met, if so, further generates the control signal for controlling all the power switching devices 11 to be turned on in sequence at the preset time interval, and directly acts on the control end of the power switching device 11. In addition, after all the power switching devices 11 are turned on, if the trigger signal is received again, it is determined as the signal for turning off all the power switching devices 11, at this time, the control signal for controlling all the power switching devices 11 to be turned off is generated. It can be seen that the logic device in the embodiment realizes the unified control of the power switching device 11 by analyzing the key state, so that all the power switching devices 11 are turned on or turned off according to the combined operation trigger signal, and the switching state of the entire power supply path is controlled under a single operation.

[0045] In the embodiment, the logic device can distinguish the single key operation and the combined key operation. When the combined operation trigger signal is not detected, the logic device does not generate the control signal of the power switch device 11, and keeps the original state of the power switch device 11. The logic device realizes the key function multiplexing through the judgment mechanism of the combined operation, and controls the on-off of all the power switch devices 11 under specific conditions.

[0046] In an exemplary embodiment, the control module 13 includes a baseboard management controller. The input end of the baseboard management controller is connected with the host computer, the output end of the baseboard management controller is connected with the input end of the isolation driving module 12, the baseboard management controller is configured to generate the corresponding control signal and send it to the isolation driving module 12 in a preset time interval in response to the indication signal sent by the host computer, so that the plurality of power switch devices 11 are turned on in turn with a delay; otherwise, the plurality of power switch devices 11 are turned off.

[0047] In the embodiment, the control module 13 includes a baseboard management controller. The host computer can send an indication signal to the baseboard management controller. After receiving the indication signal, the baseboard management controller generates a corresponding control signal according to a preset logic. The preset logic is that the indication signal is received, and at the same time, it is continuously detected within a preset time period that a computing node is accessed and the demand current of the computing node is greater than a first preset threshold, and the power supply current on the copper bus is greater than a second preset threshold. The baseboard management controller converts the operation instruction into a control signal recognizable by the power switch device 11 by analyzing the indication signal sent by the host computer.

[0048] After generating the control signal, the baseboard management controller transmits the signal to the isolation driving module 12. The isolation driving module 12 drives each power switch device 11 to turn on or turn off according to the control signal. Through the control of the baseboard management controller, the unified or individual control of the power switch device 11 can be realized according to the instruction of the host computer. In addition, before generating the control signal, the baseboard management controller will perform internal signature verification on the received indication signal of the host computer. Only after the verification is passed, the baseboard management controller will generate the corresponding control signal, so as to ensure that the control operation of the power switch device 11 is reliable and trusted.

[0049] In the embodiment, the baseboard management controller can respond to the operation demand of the host computer in real time. When the host computer sends a switch-on, switch-off or other power supply instruction, the baseboard management controller immediately generates and issues the corresponding control signal, realizing dynamic control of the power supply system state. The embodiment ensures that under different operating states, the power supply system can accurately perform the turn-on and turn-off operations of the power switch device 11 according to the indication of the host computer.

[0050] In an exemplary embodiment, a state monitoring module 14 is further included; an output end of the state monitoring module 14 is connected with an input end of the control module 13, and is configured to monitor the voltage and / or current and / or temperature of each power switch device 11; the control module 13 is further configured to control all the power switch devices 11 to be turned off in response to the voltage being greater than an overvoltage threshold, or in response to the voltage being less than an undervoltage threshold, or in response to the current being greater than an overcurrent threshold.

[0051] In the embodiment, the state monitoring module 14 is used to monitor the voltage, current and temperature of each power switch device 11. The output end of the state monitoring module 14 transmits the monitoring data collected in real time to the control module 13, so that the control module 13 can obtain the running state information of the power switch device 11, and provide a basis for subsequent control logic.

[0052] The control module 13 judges the safety state of the power supply link according to the voltage and current information provided by the state monitoring module 14. When it is monitored that the voltage is greater than the overvoltage threshold or less than the undervoltage threshold, or the current is greater than the overcurrent threshold, the control module 13 generates a control signal to make all the power switch devices 11 turn off, so as to cut off the power supply path and prevent the abnormal state from affecting the computing node. The monitoring data of the temperature and voltage are transmitted to the control module 13 in real time, and the control module 13 analyzes and judges according to the collected data, so as to generate a corresponding control signal to realize the safe on-off control of the power switch device 11 and guarantee the stable operation of the power supply system under the abnormal voltage or high temperature state. The device for collecting temperature can be but is not limited to a temperature sensor.

[0053] Among them, the voltage threshold, the overvoltage threshold and the overcurrent threshold are determined according to the designed voltage, current range of the power supply system and the rated working parameters of the power supply brick. Specifically, when the copper bus voltage is 54V, the overvoltage threshold is set to 58V and the undervoltage threshold is set to 44V, so that the control module 13 can turn off the power switch device 11 in time when the voltage exceeds the safe range.

[0054] In the embodiment, an NTC thermistor is installed near each power switch device 11 for collecting the temperature change of the power switch device 11 in real time, and the control module 13 obtains the temperature information of each power switch device 11 by reading the resistance change of the thermistor. The voltage detection samples the 54V input voltage and the output voltage of the power module through a voltage dividing resistor network, and the control module 13 can obtain the voltage state of the power switch device 11 according to the voltage value after voltage division, so as to realize the real-time monitoring of the voltage of the power supply link.

[0055] In the embodiment, the control module 13 determines the thermal state of the power switch device 11 according to the temperature information of the state monitoring module 14, and then performs corresponding processing on the responding power switch device 11 to avoid further temperature rise of the device and ensure the safe operation of the power supply system under high temperature conditions.

[0056] In an exemplary embodiment, a plurality of shunt devices are further included, the input end of the shunt device is connected with the output end of the power switch device 11, the output end of the shunt device is connected with the input end of the power supply brick, and the number of the shunt devices is determined according to the required current of the power supply brick and the rated current of the shunt device.

[0057] In the embodiment, a plurality of shunt devices can be further included. The shunt device undertakes the functions of current shunting and detection in the power supply link, each shunt device distributes the current through its own resistance value to achieve sampling of the output current of each power switch device 11. The number of the shunt devices is determined according to the required current of the power supply brick and the rated current of the shunt device. By reasonably setting the number of the shunt devices, the embodiment ensures that each shunt device works within its rated current range, while meeting the total current requirement of the power supply brick, so that the accuracy and reliability of current detection are guaranteed.

[0058] In the embodiment, the state monitoring module 14 can include a current detection device, wherein the current detection device can be a device supporting ±110V common mode voltage, which can sample the voltage across the shunt device in a high voltage environment. The current detection device converts the voltage difference across the shunt device into a corresponding current value and outputs it to the control module 13, so that the control module 13 can obtain the current state of each power switch device 11.

[0059] In the embodiment, the combination of the shunt device and the current detection device realizes continuous monitoring of the output current of the power switch device 11. The control module 13 can determine whether there is an overcurrent state in the power supply link according to the collected current information, and generate a control signal to control the power switch device 11 to shut down when necessary, thereby ensuring the safety of the power supply system under large current operating conditions.

[0060] In an exemplary embodiment, the control module 13 is further configured to control the power switch device 11 whose temperature reaches the first temperature threshold to shut down when the state monitoring module 14 monitors that the temperature of any one of the power switch devices 11 reaches the first temperature threshold.

[0061] In this embodiment, the control module 13 continuously receives temperature data from the state monitoring module 14 and judges the temperature of each power switching device 11. When the state monitoring module 14 monitors that the temperature of any power switching device 11 reaches the first temperature threshold, the control module 13 identifies that the power switching device 11 is in a high-temperature state. After determining that the power switching device 11 reaches the first temperature threshold, the control module 13 generates a turn-off control signal for controlling the power switching device 11 whose temperature reaches the threshold to switch from the on state to the off state. This embodiment directly turns off the high-temperature power switching device 11 to block the overheat device from continuing to carry current, thereby preventing the temperature from further rising.

[0062] While performing the turn-off operation, the control module 13 continues to receive temperature data of other power switching devices 11 to ensure that only the power switching device 11 whose temperature reaches the first temperature threshold is turned off, and the power switching device 11 that does not reach the threshold remains in the normal working state. This embodiment realizes local temperature control management of the power supply system by selective turn-off.

[0063] In this embodiment, the turn-off operation is sent to the isolation driving module 12 through the output end after the internal logic processing of the control module 13, so that the corresponding power switching device 11 is quickly disconnected from the current path. This embodiment ensures that the operating state of the power switching device 11 is controlled in a high-temperature condition, while maintaining continuous power supply to other parts of the power supply system.

[0064] In an exemplary embodiment, the control module 13 is further configured to control the power switching device 11 with higher temperature to turn off when the state monitoring module 14 monitors that the temperature difference between any two power switching devices 11 reaches a preset temperature difference threshold.

[0065] In this embodiment, the control module 13 continuously receives temperature data from the state monitoring module 14 and calculates the temperature difference of each pair of power switching devices 11. When the state monitoring module 14 monitors that the temperature difference between any two power switching devices 11 reaches a preset temperature difference threshold, the control module 13 identifies that there is a significant temperature unevenness between the two power switching devices 11. After determining that the temperature difference reaches the threshold, the control module 13 generates a turn-off control signal for controlling the power switching device 11 with higher temperature to switch from the on state to the off state. The control module 13 only performs the turn-off operation on the power switching device 11 with higher temperature, while the power switching device 11 with lower temperature remains in the on state, thereby adjusting the power distribution in the power supply link.

[0066] The control module 13 continues to monitor the temperature changes of the other power switch devices 11 while performing the shutdown operation, ensuring that the shutdown operation can be dynamically adjusted for the current temperature conditions. The control module 13 generates control signals in real time by continuously determining the temperature difference, so that the power supply system can automatically disconnect the high-temperature power switch device 11 when there is a temperature difference.

[0067] In this embodiment, the shutdown signal is sent to the isolation drive module 12 through the output end of the control module 13, and the isolation drive module 12 transmits the signal to the corresponding power switch device 11, so that the power switch device 11 with higher temperature is disconnected in advance. The embodiment ensures that the power supply system can maintain safe operation when there is a temperature difference in the power switch device 11, while limiting the further development of local overheating.

[0068] In an exemplary embodiment, the control module 13 is further configured to, after the server has a restart requirement and all power switch devices 11 are shut down, if the output current of the power switch device 11 detected by the state monitoring module 14 is less than the preset current threshold, start timing, and when the timing reaches the first preset time, control all power switch devices 11 to be turned on.

[0069] In this embodiment, when the server has a restart requirement, the control module 13 controls all power switch devices 11 to be shut down to cut off the current path between the copper bus and the power supply brick, ensuring that the power supply link is in a safe state. The control module 13 continuously receives the output current data from the state monitoring module 14 and determines whether the output current of the power switch device 11 is less than the preset current threshold. When the detected output current is lower than the threshold, it is determined that the shutdown has been achieved, and the control module 13 starts timing to record the time length from when the current is lower than the current threshold. After the timing reaches the first preset time, the control module 13 generates a turn-on control signal for controlling all power switch devices 11 to switch from the off state to the on state. The control module 13 sends this signal to the isolation drive module 12 through the output end, so that the power switch device 11 resumes conduction, thereby re-establishing the power supply link of the server.

[0070] In this embodiment, during timing and control, the control module 13 continuously monitors the state of the power switch device 11 to ensure that the turn-on operation is performed under the premise that the output current meets the preset conditions. The embodiment enables the server to safely and orderly restore the on state of all power switch devices 11 under the restart requirement through current detection and timing control.

[0071] In an exemplary embodiment, the control module 13 is further configured to, if it is monitored that the temperature of any two power switching devices 11 reaches a preset temperature difference threshold before the turning off of all the power switching devices 11 or during the timing of the first preset time, control the power switching device 11 with lower temperature to be turned on preferentially when the timing reaches the first preset time, and delay for a third preset time before controlling the power switching device 11 with higher temperature to be turned on.

[0072] In the embodiment, the control module 13 continuously monitors the temperature state of each power switching device 11 before the operation of turning off all the power switching devices 11 is performed or during the timing of the first preset time. When it is detected that the temperature of any two power switching devices 11 reaches a preset temperature difference threshold, the control module 13 records the temperature state for subsequent on-off sequence judgment.

[0073] After the timing reaches the first preset time, the control module 13 first generates a control signal to make the power switching device 11 with lower temperature to be turned on preferentially. The control module 13 applies the signal to the corresponding power switching device 11 through the isolation driving module 12 to make the power switching device 11 re-establish the current path, so that the power supply of the power switching device 11 with lower temperature is recovered first when the system is restarted.

[0074] After the power switching device 11 with lower temperature is turned on, the control module 13 delays for a second preset time and then generates a control signal to make the power switching device 11 with higher temperature to be turned on. The delay operation can take into account the temperature difference between the power switching devices 11 and prevent the power switching device 11 with higher temperature from immediately bearing excessive current when it is turned on initially.

[0075] It can be seen that, by controlling the power switching devices 11 to be turned on in batches according to the temperature state through the control module 13, the power supply system can maintain the safety of the power switching devices with higher temperature during the restart of the server while ensuring the gradual establishment of the overall current of the system. The embodiment realizes the temperature management of the power switching devices 11 and the safe adjustment of the power supply restart through temperature monitoring and sequential on-off control.

[0076] In an exemplary embodiment, the control module 13 is further configured to, if it is monitored that the temperature of any two power switching devices 11 reaches a preset temperature difference threshold before the turning off of all the power switching devices 11 or during the timing of the first preset time, control the power switching device 11 with lower temperature to be turned on preferentially when the timing reaches the first preset time, and delay for a third preset time before controlling the power switching device 11 with higher temperature to be turned on.

[0077] In this embodiment, the control module 13 continuously monitors the temperature state of each power switch device 11 before all power switch devices 11 are turned off, or during the timing of the first preset time. When the temperature difference of any two power switch devices 11 reaches the preset temperature difference threshold, the control module 13 records the temperature information of the two for subsequent conduction sequence judgment.

[0078] After the timing reaches the first preset time, the control module 13 first generates a control signal to preferentially turn on the power switch device 11 with lower temperature. The control module 13 acts on the corresponding power switch device 11 through the isolation driving module 12 to make it restore the current path first, thereby reducing the instantaneous load of the high-temperature device when the system restarts or power supply recovers. After the power switch device 11 with lower temperature is turned on, the control module 13 delays for a third preset time and then generates a control signal to turn on the power switch device 11 with higher temperature. This delay operation takes into account the temperature difference between the power switch devices 11, avoiding the high-temperature device from immediately bearing excessive current when initially turned on, thereby reducing the impact of local thermal stress on the device.

[0079] In this embodiment, the control module 13 turns on the power switch devices 11 according to the temperature difference threshold, so that the power supply system can balance the thermal state of the power switch devices 11 during the restart or recovery process, while ensuring that the overall power supply is gradually established. This embodiment realizes the management of temperature difference of the power switch devices 11 and the safe recovery of the system through temperature difference monitoring and batch conduction.

[0080] In one embodiment, when the control module 13 detects the temperature of the power switch device 11, it is assumed that the MOS1 temperature is 50°C, the MOS2 temperature is 50°C, and the MOS3 temperature reaches 80°C during work. This indicates that the load of MOS3 is larger, and its power consumption causes the temperature to rise significantly higher than the other two devices. Under high-temperature conditions, MOS3 may be damaged or have temperature drift, and if the conduction state is continued, it will affect the stability of the power supply system and the service life of MOS. When the control module 13 detects that the temperature of MOS3 exceeds the first temperature threshold, it will control MOS3 to turn off in advance, thereby preventing it from working continuously at high temperature and causing damage, while keeping MOS1 and MOS2 continuously conducting, so that the overall current of the system can be evenly distributed on the MOS with lower temperature. In this way, this embodiment can balance power current sharing and device protection during work. When the server needs to restart, the control module 13 first turns on MOS1 and MOS2 with lower temperature, and then turns on MOS3 with higher temperature after a preset time. In this way, the high-temperature MOS can be avoided from directly bearing the starting current, the load pressure can be reduced, and the current sharing and device safety during the restart process can be ensured.

[0081] It can be seen that by adopting the time-sharing conduction strategy for MOS at different temperatures, the working state of the high-temperature device can be controlled, while the continuity and current sharing effect of the overall power supply are ensured, so that the power supply system can maintain stable operation under high load conditions.

[0082] In an exemplary embodiment, an independent power supply module is further included, an input end of which is connected with the copper busbar, and output ends thereof are respectively connected with a power supply end of the isolation driving module 12 and a power supply end of the control module 13; the independent power supply module is configured to convert the power supply on the copper busbar, so as to provide power supply for the isolation driving module 12 and the control module 13.

[0083] In the embodiment, the input end of the independent power supply module is connected with the copper busbar, for obtaining the power supply signal from the busbar, and performing necessary conversion processing on the input power supply inside the module, so as to convert it into power supply voltage and current suitable for the isolation driving module 12 and the control module 13. The output ends of the independent power supply module are respectively connected with the power supply end of the isolation driving module 12 and the power supply end of the control module 13, so that the isolation driving module 12 and the control module 13 can operate in a safe working range different from the busbar voltage, thereby ensuring the stability of the control signal and the driving signal. The independent power supply module converts the power supply on the copper busbar in voltage or current, so that the isolation driving module 12 can obtain stable driving power supply in a high-voltage and large-current environment, and at the same time, the control module 13 can stably generate control signals.

[0084] In a specific embodiment, the independent power supply module obtains the power supply signal from the 54V input interface, and converts the input voltage into the working voltage required by the isolation driving module 12 and the control module 13 inside the module through DC-DC conversion. The DC-DC conversion of the independent power supply module ensures the stability of the output power supply, meets the working requirements of the isolation driving module 12 and the control module 13 in a high-current and high-voltage environment, and enables them to operate normally independently of the main power supply link. The output power supply of the independent power supply module is independent of other power supply loops in the node, and does not depend on the CPLD (Complex Programmable Logic Device, Complex Programmable Logic Device) power supply, thereby ensuring that the isolation driving module 12 and the control module 13 can still continuously receive stable power supply when other circuits in the node change state or fail. The setting of the independent power supply module ensures that the generation of control signals and driving signals is independent of the switching operation of the power switching device 11, so that the power supply system can maintain the reliability of the control link and the driving link under complex working conditions.

[0085] In summary, the setting of the independent power supply module makes the isolation driving module 12 and the control module 13 not directly dependent on the original power supply voltage of the copper busbar, thereby ensuring that the control link and the driving link can continuously and stably work during the voltage fluctuation of the busbar or the operation process of the power switching device 11.

[0086] In an exemplary embodiment, a first power supply path and a second power supply path are provided in parallel between each power switch device 11 and the power supply brick, the first power supply path has a larger resistance than the second power supply path; the control module 13 is further configured to control the corresponding first power supply path to be turned on when the power switch device 11 is turned on, and to control the first power supply path to be turned off and the corresponding second power supply path to be turned on after a fourth preset time.

[0087] In this embodiment, a first power supply path and a second power supply path are provided in parallel between each power switch device 11 and the power supply brick, the first power supply path has a larger resistance than the second power supply path. This structure makes the current mainly flow through the first power supply path with a larger resistance in the initial stage of the power switch device 11 being turned on, thereby controlling the current size in the initial charging or power-on process and avoiding the instantaneous large current directly acting on the power supply brick or the power switch device 11.

[0088] Specifically, the control module 13 controls the corresponding first power supply path to be turned on at the same time when the power switch device 11 is turned on, so that the current flows into the power supply brick through the first power supply path. At this stage, since the first power supply path has a larger resistance, the current is limited, which can slow down the voltage mutation on the power switch device 11 and the power supply brick, and reduce the impact of the initial impact on the device. The control module 13 controls the first power supply path to be turned off and the corresponding second power supply path to be turned on after a fourth preset time (e.g., 50 ms). At this time, the current flows through the second power supply path with a smaller resistance, so that a complete low-impedance power supply path is formed between the power switch device 11 and the power supply brick, realizing stable large-current transmission and completing the transition from the initial current-limiting state to the normal working state.

[0089] In this embodiment, through the timing control of the turning on and turning off of the first power supply path and the second power supply path, the controlled current start in the initial stage of the power switch device 11 being turned on and the switching of the subsequent normal power supply are realized, thereby ensuring the safety of the power switch device 11 and the power supply brick in the power-on process.

[0090] As Figure 2 In an exemplary embodiment, the first power supply path includes a controllable switch and a resistor device; the input end of the controllable switch is connected with the corresponding power switch device 11, the output end of the controllable switch is connected with the first end of the resistor device, the second end of the resistor device is connected with the corresponding power supply brick, and the control end of the controllable switch is connected with the control module 13.

[0091] In this embodiment, the first power supply path includes a controllable switch and a resistor device, and the input end of the controllable switch is connected with the corresponding power switch device 11, so that the current can flow into the resistor device through the controllable switch when the power switch device 11 is turned on. In this embodiment, the first power supply path includes a controllable switch and a resistor device, and the input end of the controllable switch is connected with the corresponding power switch device 11, so that the current can flow into the resistor device through the controllable switch when the power switch device 11 is turned on.

[0092] The resistor device allows the current to flow into the power brick through the resistor device initially. Due to the presence of the resistor device, the current flowing through the first power supply path is limited to a certain extent, thereby controlling the current amplitude of the initial power-on or conduction process, avoiding the instantaneous large current impact on the power switch device 11 and the power brick.

[0093] The control module 13 generates a control signal according to a preset logic to control the controllable switch to turn on or off. When the control module 13 outputs a conduction signal, the controllable switch is closed to allow the current to flow through the resistor device; when the output is a turn-off signal, the controllable switch is opened to cut off the first power supply path, realizing the switching between the initial current limiting stage and the subsequent normal power supply stage. Further, a capacitor can be arranged between the second end of the resistor device and the ground to protect the rear-end power brick.

[0094] In this embodiment, through the combination of the controllable switch and the resistor device, the first power supply path can form a controlled current path during the initial conduction of the power switch device 11, ensuring the smoothness of the current during the power-on process and preparing for the subsequent switching to the second power supply path, thereby ensuring the safety and stability of the entire power supply link.

[0095] In an exemplary embodiment, the second power supply path includes a relay contact; the first end of the relay contact is connected to the corresponding power switch device 11, and the second end of the relay contact is connected to the corresponding power brick.

[0096] In this embodiment, the second power supply path includes a relay contact, so that after the power switch device 11 is turned on, the current can be transmitted directly to the power brick through the relay contact. The second end of the relay contact is connected to the corresponding power brick to form a low-impedance current path, so that after the current passes through the first power supply path with initial current limiting, the power brick can be directly supplied through the second power supply path, thereby realizing the normal power supply state.

[0097] The relay contact is turned on or off under the control of the control module 13, and the control module 13 can control the closure of the relay contact according to the preset time or state logic, thereby switching to the second power supply path after completing the initial current limiting stage of the first power supply path, ensuring smooth current transmission between the power switch device 11 and the power brick.

[0098] In this embodiment, through the second power supply path of the relay contact, the embodiment can provide a low-impedance power supply path after the initial current limiting of the power supply link, so that the power supply system remains stable during the high-current operation stage, while avoiding the impact of the resistance of the first power supply path on the normal working current.

[0099] As Figure 2The power signal output by the power supply brick can be, but is not limited to, P12V_STBY of 12V. The computing node back end can further be designed with a first conversion module for converting the 12V power supply into 3.3V (i.e., P3V3_STBY), and can further be provided with a second conversion module for converting the 12V power supply into 5V (i.e., P5V_STBY) for use by different devices in the computing node.

[0100] In addition, in the embodiment, the logic device can feed back the current state information or the action information of the power switch device 11 to the baseboard management controller through I2C, so that the baseboard management controller feeds back to the host computer. The baseboard management controller and the isolated drive module 12, the baseboard management controller and the current detection device and the temperature sensor can be connected through the I2C line, but not limited to. The logic device and the optical fiber transmitter can communicate through LVDS, but not limited to. In another embodiment, when the baseboard management controller is normal, the baseboard management controller is used to transmit the control signal to the isolated drive module 12; when the baseboard management controller is abnormal, the logic device is used to transmit the control signal to the isolated drive module 12, but this is not the only implementation way, and the actual design can be set according to user demand.

[0101] Compared with the multi-eFuse parallel scheme, the power supply system proposed in the application adopts the mode of multiple parallel power switch devices 11 and isolated drive modules 12 and control modules 13 for cooperative control in structure, realizes large-current on-off control. In the embodiment, the control module 13 directly generates a control signal and drives the power switch device 11 to conduct or turn off through the isolated drive module 12, avoiding the multi-link delay of relying on the BMC (Baseboard Management Controller, baseboard management controller) instruction transmission and the eFuse internal logic response, thereby shortening the power supply switch response time and meeting the server fast power-off demand. In the embodiment, the power switch device 11 can share the load during conduction, and the temperature and current are monitored and controlled in real time by the state monitoring module 14, realizing independent power-off and temperature difference management of the power device, thereby reducing the risk of single device overload and high temperature damage. At the same time, in the embodiment, high-precision current-sharing resistors or additional current-sharing regulation loops are not required, so that the hardware cost is significantly reduced; by flexibly arranging the power switch device 11 and the isolated drive module 12, the occupied space of a single module is reduced, which is more suitable for internal arrangement of high-density computing nodes. In addition, the control link and the power link of the embodiment are provided with stable power supply by the independent power supply module, so that the control signal generation and the power switch operation are independent of each other, ensuring the reliability and controllability of the power supply system in a high-current and high-voltage working environment, thereby overcoming the limitations of the multi-eFuse scheme in cost, current sharing, response speed and space occupation.

[0102] In a second aspect, the present application provides an electronic device comprising the power supply system as described above.

[0103] The electronic device provided by the present application comprises the power supply system as described above. In this embodiment, a plurality of parallel power switch devices, an isolation driving module and a control module are integrated in the electronic device to realize on-off control of the internal high-current power supply path. During operation of the electronic device, the control module generates a control signal according to a target requirement, and the control signal is applied to the power switch device through the isolation driving module to realize independent power supply management of the power supply brick or the load module, and dynamic control can be performed according to state parameters such as temperature and current, so as to ensure the power supply stability and safety of the device under different working conditions.

[0104] In a third aspect, the present application provides a server comprising the power supply system as described above.

[0105] The server provided by the present application comprises the power supply system as described above. In this embodiment, a plurality of power switch devices are arranged in parallel in the power supply link of the computing node in the server, and the power switch devices are cooperatively controlled by the control module and the isolation driving module to realize rapid turn-on and turn-off of the power supply brick of the server node. When the server executes a high-load task or needs to be restarted, the control module adjusts the on-off sequence and time of the power switch devices according to state monitoring data to realize accurate management of the node power supply, and ensures stable operation and uninterrupted computing power of the server under high-current working conditions.

[0106] Those skilled in the art will further appreciate that the units and algorithm steps of the examples described in connection with the embodiments disclosed herein can be implemented in electronic hardware, computer software, or a combination of both. To clearly illustrate the interchangeability of hardware and software, the above description has been generally described in terms of functional components and steps. Whether such functions are implemented in hardware or software depends on the particular application and design constraints. Those skilled in the art can implement the described functions in different ways for each particular application, but such implementation should not be considered to be beyond the scope of the present application.

[0107] The above provides a power supply system, an electronic device and a server. The principles and implementation modes of the present application are described by using specific examples. The above description of the examples is only used to help understand the method and core idea of the present application. It should be pointed out that, for those skilled in the art, without departing from the principles of the present application, some improvements and modifications can be made to the present application, and these improvements and modifications also fall within the protection scope of the claims of the present application.

Claims

1. A power supply system, characterized in that, include: Multiple power switching devices are connected in parallel, with the input terminals of the power switching devices connected to the copper busbar and the output terminals of the power switching devices connected to the power supply brick in the computing node. An isolation drive module, the output of which is connected to the control terminal of each of the power switching devices, is configured to drive the corresponding power switching module to turn on or off in isolation in response to a control signal. The control module, whose output is connected to the input of the isolation drive module, is configured to continuously detect the access of the computing node within a preset time period, and the current demand of the computing node is greater than a first preset threshold, and the power supply current on the copper busbar is greater than a second preset threshold, and generate multiple control signals sequentially at preset time intervals to cause multiple power switching devices to be turned on sequentially with a delay; otherwise, control the multiple power switching devices to be turned off.

2. The power supply system according to claim 1, characterized in that, The control module includes a logic device. The input terminal of the logic device is connected to the trigger module, and the output terminal of the logic device is connected to the input terminal of the isolation drive module. The logic device is configured to respond to a trigger signal sent by the trigger module, and continuously detect within a preset time period that a computing node is connected and the current demand of the computing node is greater than a first preset threshold, and the power supply current on the copper bus is greater than a second preset threshold. The logic device then generates corresponding control signals sequentially at preset time intervals and sends them to the isolation drive module, causing multiple power switching devices to be turned on sequentially with a delay; otherwise, it controls multiple power switching devices to be turned off.

3. The power supply system according to claim 2, characterized in that, It also includes an optical fiber transmitter, the input of which is connected to the output of the logic device; The isolation drive module includes an isolation drive device and an optical fiber receiver; The input end of the optical fiber receiver is connected to the output end of the optical fiber transmitter via an optical fiber. The output end of the optical fiber receiver is connected to the input end of the isolation drive device. The output end of the isolation drive device is connected to the control end of each of the power switching devices.

4. The power supply system according to claim 3, characterized in that, The isolation drive device is a magnetic isolation drive device.

5. The power supply system according to claim 2, characterized in that, The triggering module includes a button triggering module, which reuses at least two function buttons on the server. The logic device stores the correspondence between the trigger signals corresponding to the combined operation modes of the two function keys and the on / off control logic of each power switch device.

6. The power supply system according to claim 5, characterized in that, The button triggering module reuses the unit identification button and the power button on the server; The unit identifier button is configured to trigger an identifier state switch when pressed alone; The power button is configured to send a power on / off signal to the baseboard management controller when pressed individually. The logic device is configured to, when simultaneously detecting the trigger signal corresponding to the combined operation of pressing the unit identifier button and the power button, and continuously detecting within a preset time period that a computing node is connected and the current demand of the computing node is greater than a first preset threshold, and the power supply current on the copper busbar is greater than a second preset threshold, generate control signals for controlling all the power switching devices to turn off or on at preset time intervals, so that multiple power switching devices are turned on sequentially with a delay. If a trigger signal corresponding to the combined operation of pressing the unit identifier button and the power button is detected again during the power supply process, a control signal for controlling the multiple power switching devices to turn off is generated.

7. The power supply system according to claim 1, characterized in that, The control module includes a baseboard management controller. The input terminal of the baseboard management controller is connected to a host computer, and the output terminal of the baseboard management controller is connected to the input terminal of the isolation drive module. The baseboard management controller is configured to respond to an indication signal sent by the host computer, and continuously detect within a preset time period that a computing node is connected and the current demand of the computing node is greater than a first preset threshold, and the power supply current on the copper busbar is greater than a second preset threshold, and generate corresponding control signals sequentially at preset time intervals and send them to the isolation drive module, so that the multiple power switching devices are turned on sequentially with a delay; otherwise, control the multiple power switching devices to turn off.

8. The power supply system according to claim 1, characterized in that, It also includes a status monitoring module; the output of the status monitoring module is connected to the input of the control module and is configured to monitor the voltage and / or current and / or temperature of each of the power switching devices; The control module is also configured to control all the power switching devices to turn off in response to the voltage being greater than an overvoltage threshold, or in response to the voltage being less than an undervoltage threshold, or in response to the current being greater than an overcurrent threshold.

9. The power supply system according to claim 8, characterized in that, It also includes multiple shunts, the input of which is connected to the output of the power switching device, and the output of which is connected to the input of the power brick. The number of shunts is determined according to the required current of the power brick and its own rated current.

10. The power supply system according to claim 8, characterized in that, The control module is further configured to control the power switching device whose temperature reaches the first temperature threshold to turn off when the status monitoring module detects that the temperature of any one of the power switching devices has reached the first temperature threshold.

11. The power supply system according to claim 9, characterized in that, The control module is also configured to turn off the power switch with the higher temperature when the status monitoring module detects that the temperature difference between any two power switching devices reaches a preset temperature difference threshold.

12. The power supply system according to claim 1, characterized in that, The control module is also configured to, when the server needs to restart and all power switching devices are turned off, if the output current of the power switching devices is detected to be less than a preset current threshold, start a timer, and when the timer reaches a first preset time, control all the power switching devices to turn on.

13. The power supply system according to claim 12, characterized in that, The control module is further configured to, if, during a standard time interval before all power switching devices are turned off, or during the timing of the first preset time, it is detected that the temperature of any power switching device reaches a first temperature threshold, then when the timing reaches the first preset time, it controls the power switching devices that have not reached the first temperature threshold to be turned on first, and after a second preset time delay, it controls the power switching devices that have reached the first temperature threshold to be turned on.

14. The power supply system according to claim 12, characterized in that, The control module is further configured to, if, within a standard time interval before all the power switching devices are turned off, or during the timing of the first preset time, the temperature difference between any two power switching devices is detected to reach a preset temperature difference threshold, then when the timing reaches the first preset time, the power switching device with the lower temperature among the two is controlled to be turned on first, and after a third preset time delay, the power switching device with the higher temperature among the two is controlled to be turned on.

15. The power supply system according to claim 1, characterized in that, It also includes an independent power supply module, whose input terminal is connected to the copper busbar, and whose output terminal is connected to the power supply terminal of the isolation drive module and the power supply terminal of the control module, respectively; the independent power supply module is configured to convert the power supply on the copper busbar to provide power to the isolation drive module and the control module.

16. The power supply system according to any one of claims 1-15, characterized in that, A first power path and a second power path are connected in parallel between each of the power switching devices and the power supply brick, wherein the resistance of the first power path is greater than the resistance of the second power path. The control module is further configured to control the corresponding first power path to be turned on when the power switching device is turned on, and to control the first power path to be turned off and the corresponding second power path to be turned on after a fourth preset time.

17. The power supply system according to claim 16, characterized in that, The first power path includes a controllable switch and a resistor; the input terminal of the controllable switch is connected to the corresponding power switch device, the output terminal of the controllable switch is connected to the first terminal of the resistor device, the second terminal of the resistor device is connected to the corresponding power supply brick, and the control terminal of the controllable switch is connected to the control module.

18. The power supply system according to claim 17, characterized in that, The second power path includes a relay contact; the first end of the relay contact is connected to the corresponding power switching device, and the second end of the relay contact is connected to the corresponding power supply brick.

19. An electronic device, characterized in that, Including the power supply system as described in any one of claims 1-18.

20. A server, characterized in that, Including the power supply system as described in any one of claims 1-18.

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