Server power supply circuit and control method therefor

Abstract

The present application relates to the technical field of server power supplies, and discloses a server power supply circuit and a control method therefor. The present application comprises: a voltage conversion module, a power failure retention module, and a control module. An input end of the voltage conversion module is connected to the power failure retention module, and an input voltage is converted into a target voltage. The power failure retention module comprises an energy storage element and a power support element. The energy storage element stores energy provided by an input voltage of the circuit and transmits the energy to the power support element. The power support element forms a voltage by means of releasing the energy transmitted by the energy storage element, so as to maintain the voltage inputted to the voltage conversion module. The control module is separately connected to the voltage conversion module and the power failure retention module and, on the basis of current state information, controls an access state of the power failure retention module. Thus, the access state of the power failure retention module is controlled by means of the current state information, so that the magnitude of the target voltage is maintained when the input voltage of the circuit experiences power failure, a certain time period is provided for a server to back up data, and the reliability of the server power supply circuit is improved.

Description

Server power supply circuit and control method thereof

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority to Chinese patent application number 2023111632269, filed with the Patent Office of China on September 11, 2023, entitled “Server Power Supply Circuit and Control Method Thereof,” the entire contents of which are incorporated herein by reference. Technical Field

[0003] The present application relates to the technical field of server power supply, and in particular to a server power supply circuit and a control method thereof. Background Art

[0004] As the server's power supply unit (PSU), the server power supply must be highly reliable. This requires the server power supply to detect and report relevant input and output status in real time to the server, and to promptly handle any anomalies to prevent them from spreading and causing larger accidents or losses. In particular, when the server power supply's input voltage drops, the server power supply cannot normally supply power to the server. As a result, the server cannot back up relevant data in a timely manner, reducing the server power supply's reliability.

[0005] Summary of the Invention

[0006] In view of this, the present application provides a server power supply circuit and a control method thereof to solve the problem that the server cannot back up data in time when the input voltage of the server power supply has a power failure abnormality and the server power supply reliability is low.

[0007] In a first aspect, the present application provides a server power supply circuit, which includes: a voltage conversion module, a power-off retention module, and a control module;

[0008] The input end of the voltage conversion module is connected to the power-off holding module; the voltage conversion module is configured to convert the input voltage of the voltage conversion module into a target voltage; the target voltage is used to supply power to the server;

[0009] The power-off holding module is configured to maintain the target voltage when the input voltage of the circuit is powered off; the power-off holding module includes an energy storage element and a power supply element;

[0010] The first end of the energy storage element is connected to the input end of the circuit, and the second end of the energy storage element is connected to the input end of the voltage conversion module; the energy storage element is configured to store energy provided by the input voltage of the circuit and transfer the energy to the power supply element;

[0011] The first end of the power supply element is connected to the input end of the circuit, and the second end of the power supply element is connected to the input end of the voltage conversion module; the power supply element forms a voltage by releasing the energy transferred by the energy storage element, so as to maintain the voltage of the input voltage conversion module when the input voltage of the circuit is powered off, thereby maintaining the target voltage;

[0012] The control module is connected to the voltage conversion module and the power-off holding module respectively. The control module is configured to collect current status information of the circuit and control the access status of the power-off holding module according to the current status information so as to start the power-off holding module when the input voltage of the circuit fails.

[0013] In this way, the current status information collected by the control module can be used to control the access status of the power-off retention module, thereby maintaining the target voltage when the input voltage of the circuit is powered off, providing a certain amount of time for the server to back up data, and improving the reliability of the server power circuit.

[0014] In an optional embodiment, the power-off holding module further includes a diversion switch; the diversion switch is configured to control the frequency and duration of energy transfer from the energy storage element to the power supply element, so as to control the magnitude of the voltage provided by the power supply element;

[0015] The first end of the diversion switch is connected to the second end of the energy storage element, and the second end of the diversion switch is connected to the first end of the power supply element;

[0016] When the diversion switch is turned on, the energy storage element stores the energy provided by the input voltage of the circuit;

[0017] When the diversion switch is disconnected, the energy storage element transfers energy to the power supply element, and the power supply element releases the energy transferred by the energy storage element to form a voltage.

[0018] In this way, the voltage provided by the power supply element can be controlled by the diversion switch, so that the voltage of the input voltage conversion module is maintained when the input voltage of the circuit is powered off, thereby maintaining the target voltage.

[0019] In an optional embodiment, the circuit further includes a power-off holding switch;

[0020] The first end of the power-off holding switch is connected to the power-off holding module, the second end of the power-off holding switch is connected to the voltage conversion module, and the third end of the power-off holding switch is connected to the control module;

[0021] The control module controls the connection and / or disconnection of the power-off holding module and the voltage conversion module through the power-off holding switch to control the connection state of the power-off holding module.

[0022] In an optional embodiment, the power-off holding switch is a transistor;

[0023] The control module controls the conduction of the transistor, controls the connection between the power-off holding module and the voltage conversion module, and controls the start of the power-off holding module;

[0024] And / or, the control module controls the transistor to be turned off, controls the power-off holding module and the voltage conversion module to be disconnected, and controls the power-off holding module to be turned off.

[0025] In this way, the connection or disconnection between the power-off holding module and the voltage conversion module can be controlled by the power-off holding switch, thereby controlling the access state of the power-off holding module.

[0026] In an optional embodiment, the circuit further comprises a hot-swap module, the hot-swap module being connected to the control module and the control module respectively;

[0027] The hot-swap module is configured to suppress current spikes generated by the input current when the circuit is hot-plugged;

[0028] The control module is configured to control the access status of the hot-swappable module.

[0029] In this way, by inserting a hot-swap module into the circuit, the current spike generated by the input current when the circuit is plugged in and out while powered on can be suppressed, ensuring the stability of the input current and avoiding fluctuations in the current output by the server power circuit.

[0030] In an optional embodiment, the control module includes a first controller and a second controller; the first controller and the second controller are electrically isolated and communicatively connected;

[0031] The current state information includes an input voltage and a first temperature at an input terminal of the circuit, and an output current and a second temperature at an output terminal of the voltage conversion module;

[0032] The first controller is connected to the input end of the circuit, and the first controller is configured to collect an input voltage and a first temperature;

[0033] The second controller is connected to the output end of the voltage conversion module, and is configured to collect the output current and the second temperature.

[0034] In this way, the first controller and the second controller can respectively collect relevant status of the input and output ends of the voltage conversion module, ensuring sampling and status information collection of each link of the server power supply while forming electrical isolation, avoiding failure of the input end of the server power supply circuit to affect the output end.

[0035] In an optional embodiment, the first controller is connected to the input terminal of the voltage conversion module;

[0036] The first controller determines the working state of the circuit according to the input voltage, and controls the access state of the power-off holding module, the hot-swap module and / or the voltage conversion module.

[0037] In this way, the first controller can be used to control the power-off holding module and the hot-swap module, thereby promptly processing abnormalities generated in the server power circuit and improving the reliability of the server power circuit.

[0038] In an optional embodiment, the first controller determines the working state of the circuit according to the first temperature and controls the access state of the voltage conversion module;

[0039] The second controller determines the working state of the voltage conversion module according to the output current and the second temperature, and controls the access state of the voltage conversion module.

[0040] In this way, the voltage conversion module can be controlled by the first controller and the second controller, so that abnormalities generated in the server power circuit can be processed in a timely manner, thereby improving the reliability of the server power circuit.

[0041] In a second aspect, the present application provides a method for controlling a server power supply circuit, which is applied to the server power supply circuit of the first aspect or any corresponding embodiment thereof, including:

[0042] Get the current status information of the server power circuit;

[0043] Based on the current status information, the access status of the power-off retention module is controlled.

[0044] In this way, the current status information collected by the control module can be used to control the access status of the power-off retention module, thereby maintaining the target voltage when the input voltage of the circuit is powered off, providing a certain amount of time for the server to back up data, and improving the reliability of the server power circuit.

[0045] In an optional implementation, the current state information includes an input voltage at an input end of a server power circuit; and controlling the access state of the power-off holding module based on the current state information includes:

[0046] When the input voltage is less than a first preset voltage, determining that the working state of the server power circuit is a power-off state, and sending an input undervoltage alarm message;

[0047] By controlling the power-off holding switch to be turned on, the power-off holding module and the voltage conversion module are controlled to be connected, so as to start the power-off holding module.

[0048] In this way, when the input voltage of the server power circuit is in a power-off state but not undervoltage, the voltage of the input voltage conversion module can be maintained by the power-off holding module to ensure the target voltage output by the server power circuit. At the same time, an input undervoltage alarm message is sent to remind the user end to check and adjust the input voltage in time to avoid undervoltage of the input voltage.

[0049] In an optional implementation, controlling the access state of the power-off holding module based on the current state information further includes:

[0050] When the input voltage is greater than or equal to a first preset voltage, determining that the working state of the server power circuit is a normal state;

[0051] By controlling the power-off holding switch to turn off, the power-off holding module and the voltage conversion module are controlled to be disconnected, so as to shut down the power-off holding module.

[0052] In this way, the power-off holding module can be turned off when the input voltage of the server power circuit returns to normal.

[0053] In an optional implementation, controlling the access state of the power-off holding module based on the current state information further includes:

[0054] When the input voltage is less than a second preset voltage, determining that the working state of the server power circuit is a complete power-off state, and sending input undervoltage fault information; the second preset voltage is less than the first preset voltage;

[0055] By controlling the power-off holding switch to turn off, the power-off holding module and the voltage conversion module are controlled to be disconnected, so as to shut down the power-off holding module.

[0056] In this way, when the input voltage of the server power circuit is in a completely power-off state and the power-off holding module alone cannot maintain the target output voltage of the server power circuit, the power-off holding module will also be turned off and an input undervoltage fault message will be sent to remind the user to check and adjust the input voltage in time.

[0057] In an optional embodiment, the method further includes:

[0058] Based on the current status information, the access status of the hot-swap module and / or the voltage conversion module is controlled.

[0059] In this way, the access status of the hot-swap module and / or the voltage conversion module can be controlled through the current status information, thereby responding to and processing abnormalities in the server power circuit in a timely manner.

[0060] In an optional embodiment, the current state information includes an input voltage at an input end of a server power circuit; and controlling the access state of the hot-swap module and / or the voltage conversion module based on the current state information includes:

[0061] When the input voltage is less than a third preset voltage, determining that the working state of the server power circuit is an undervoltage state, and sending input undervoltage fault information; the third preset voltage is less than the first preset voltage and greater than the second preset voltage;

[0062] Control the hot-swap module and voltage conversion module to shut down.

[0063] In this way, when the input voltage of the service power circuit is in an undervoltage state, the hot-swap module and the voltage conversion module can be turned off, and the power-off retention module can be used to maintain the target output voltage of the server power circuit. At the same time, an input undervoltage fault message is sent to remind the user to check and adjust the input voltage in time to avoid the input voltage being undervoltage all the time or even a complete power outage.

[0064] In an optional embodiment, the current state information includes an output current of the voltage conversion module; and controlling the access state of the hot-swap module and / or the voltage conversion module based on the current state information includes:

[0065] When the output current is greater than the first preset current, it is determined that the working state of the voltage conversion module is an overcurrent alarm state, and output overcurrent alarm information is sent.

[0066] In this way, when the output current of the voltage conversion module is in an overcurrent alarm state, output overcurrent alarm information can be sent to remind the user end to check and adjust the voltage conversion module in time.

[0067] In an optional embodiment, controlling the access status of the hot-swap module and / or the voltage conversion module based on the current status information further includes:

[0068] When the output current is greater than the second preset current, determining that the working state of the voltage conversion module is an overcurrent fault state, and sending output overcurrent fault information; the second preset current is greater than the first preset current;

[0069] The control voltage conversion module is turned off.

[0070] In this way, when the output current of the voltage conversion module is in an overcurrent fault state, the voltage conversion module can be shut down to prevent the overcurrent of the output current from causing further faults and damaging related components. At the same time, output overcurrent fault information is sent to remind the user end to check and adjust the voltage conversion module in time.

[0071] In an optional embodiment, the current status information includes a first temperature of a server power circuit; and controlling the access status of the hot-swap module and / or the voltage conversion module based on the current status information includes:

[0072] When the first temperature is greater than a first preset temperature, it is determined that the operating state of the server power circuit is an over-temperature alarm state, and a first over-temperature alarm message is sent.

[0073] In this way, when the temperature of the server power circuit is in an over-temperature warning state, the first over-temperature warning information can be sent to remind the user end to check and adjust the server power circuit in time.

[0074] In an optional embodiment, controlling the access status of the hot-swap module and / or the voltage conversion module based on the current status information further includes:

[0075] When the first temperature is greater than the second preset temperature, determining that the working state of the server power supply circuit is an over-temperature fault state and sending a first over-temperature fault message; the second preset temperature is greater than the first preset temperature;

[0076] The control voltage conversion module is turned off.

[0077] In this way, when the temperature of the server power circuit is in an over-temperature fault state, the voltage conversion module can be shut down to avoid further faults and damage to related components caused by excessive temperature. At the same time, the first over-temperature fault information is sent to remind the user end to check and adjust the server power circuit in time.

[0078] In an optional embodiment, the current state information includes the second temperature of the voltage conversion module; and controlling the access state of the hot-swap module and / or the voltage conversion module based on the current state information includes:

[0079] When the second temperature is greater than the third preset temperature, it is determined that the working state of the voltage conversion module is an over-temperature alarm state, and a second over-temperature alarm message is sent.

[0080] In this way, when the temperature of the voltage conversion module is in an over-temperature warning state, a first over-temperature warning message can be sent to remind the user end to promptly check and adjust the server power circuit.

[0081] In an optional embodiment, controlling the access status of the hot-swap module and / or the voltage conversion module based on the current status information further includes:

[0082] When the second temperature is greater than the fourth preset temperature, determining that the working state of the voltage conversion module is an over-temperature fault state, and sending a second over-temperature fault message; the fourth preset temperature is greater than the third preset temperature;

[0083] The control voltage conversion module is turned off.

[0084] In this way, when the temperature of the voltage conversion module is in an over-temperature fault state, the voltage conversion module can be shut down to avoid further faults and damage to related components caused by excessive temperature. At the same time, the first over-temperature fault information is sent to remind the user end to check and adjust the server power circuit in time.

[0085] In an optional implementation, obtaining current status information of a server power circuit includes:

[0086] Obtaining status information of the server power circuit at preset intervals;

[0087] Perform average processing on the obtained preset number of state information, and use the state information after average processing as the current state information.

[0088] In this way, the current status information can be obtained by taking the average value of multiple samples, avoiding the problem of inaccurate data obtained by a single sampling, and improving the reliability and accuracy of the server power circuit control. BRIEF DESCRIPTION OF THE DRAWINGS

[0089] In order to more clearly illustrate the specific implementation methods of this application or the technical solutions in related technologies, the following is a brief introduction to the drawings required for use in the specific implementation methods or related technical descriptions. Obviously, the drawings described below are some implementation methods of this application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0090] FIG1 is a schematic structural diagram of a server power supply circuit according to an embodiment of the present application;

[0091] FIG2 is a circuit diagram of a server power supply circuit according to an embodiment of the present application;

[0092] FIG3 is a schematic structural diagram of another server power supply circuit according to an embodiment of the present application;

[0093] FIG4 is a flow chart of a method for controlling a server power circuit according to an embodiment of the present application;

[0094] FIG5 is a flow chart of a specific embodiment of a method for controlling a server power circuit according to an embodiment of the present application;

[0095] FIG6 is a flow chart of another method for controlling a server power circuit according to an embodiment of the present application;

[0096] The following is a further description of the reference numerals:

[0097] 100 - voltage conversion module; 200 - power-off retention module; 210 - energy storage element; 220 - power supply element; 230 - diversion switch; 300 - control module; 310 - first controller; 320 - second controller; 400 - power-off retention switch; 500 - hot-swappable module. DETAILED DESCRIPTION

[0098] To make the purpose, technical solutions, and advantages of the embodiments of the present application more clear, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without making creative efforts shall fall within the scope of protection of this application.

[0099] As the power supply unit for servers, server power supplies are digital power supplies with high power density and complex functions. Currently, server power supply units typically use 220V AC or 380V DC as input, converting it into a 12V or 54V low-voltage DC output to power the server. To ensure the stability of server power supply, server power supplies must not only provide sufficient voltage and current output to the server but also typically include certain information detection and reporting capabilities, collecting relevant input and output parameters such as temperature and voltage and current information. After the server power supply detects and reports its relevant input and output status, the server then determines the reported input and output status. This often results in a lag in the detection and handling of server power supply anomalies or faults, reducing the reliability of the server power supply. Furthermore, when the server power supply experiences a power outage, the server power supply cannot properly supply power to the server. Consequently, when the server power supply fails to power the server, the server cannot promptly back up relevant server data, reducing the reliability of the server power supply.

[0100] In order to solve the above problems, an embodiment of the present application provides a server power supply circuit and a control method thereof. On the one hand, an embodiment of the present application provides a server power supply circuit, which includes: a voltage conversion module 100, a power-off holding module 200 and a control module 300; the input end of the voltage conversion module 100 is connected to the power-off holding module 200; the voltage conversion module 100 is configured to convert the input voltage of the voltage conversion module 100 into a target voltage; the target voltage is used to power the server; the power-off holding module 200 is configured to maintain the size of the target voltage when the input voltage of the circuit is powered off; the power-off holding module 200 includes an energy storage element 210 and a power supply element 220; the first end of the energy storage element 210 is connected to the input end of the circuit, and the second end of the energy storage element 210 is connected to the input end of the voltage conversion module 100; the energy storage element 210 is configured to The energy provided by the circuit's input voltage is stored and transferred to a power supply element 220. A first end of the power supply element 220 is connected to the circuit's input end, and a second end of the power supply element 220 is connected to the voltage conversion module 100's input end. The power supply element 220 generates a voltage by releasing the energy transferred by the energy storage element 210, thereby maintaining the voltage of the input voltage conversion module 100 when the circuit's input voltage fails, thereby maintaining the target voltage. The control module 300 is connected to the voltage conversion module 100 and the power-off hold module 200, respectively. The control module 300 is configured to collect current state information of the circuit and control the power-off hold module 200's access state based on the current state information, thereby enabling the power-off hold module 200 when the circuit's input voltage fails. In this way, the current state information collected by the control module 300 can be used to control the access state of the power-off hold module 200, thereby maintaining the target voltage when the circuit's input voltage fails, providing a certain period of time for server data backup and improving the reliability of the server's power supply circuit.

[0101] On the other hand, embodiments of the present application provide a server power circuit control method, which is applied to a server power circuit and includes: obtaining current state information of the server power circuit; and controlling the connection state of the power-off hold module 200 based on the current state information. In this way, the current state information collected by the control module 300 can be used to control the connection state of the power-off hold module 200, thereby maintaining the target voltage level when the circuit's input voltage fails, providing a certain amount of time for the server to back up data, and improving the reliability of the server power circuit.

[0102] According to an embodiment of the present application, a server power circuit embodiment is provided, and the term "module" used below can implement a combination of software and / or hardware of predetermined functions. It should be noted that the terms "first", "second", etc. in the specification and claims of this application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product or server that includes a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0103] In this embodiment, a server power supply circuit is provided. FIG1 is a structural diagram of the server power supply circuit according to an embodiment of the present application. As shown in FIG1 , the circuit includes: a voltage conversion module 100 , a power-off retention module 200 and a control module 300 .

[0104] The input end of the voltage conversion module 100 is connected to the power-off holding module 200 . The voltage conversion module 100 is configured to convert the input voltage of the voltage conversion module 100 into a target voltage, which is used to supply power to the server.

[0105] The power-off holding module 200 is configured to maintain the target voltage when the input voltage of the circuit is powered off. The power-off holding module 200 includes an energy storage element 210 and a power supply element 220. The first end of the energy storage element 210 is connected to the input end of the circuit, and the second end of the energy storage element 210 is connected to the input end of the voltage conversion module 100; the energy storage element 210 is configured to store the energy provided by the input voltage of the circuit and transfer the energy to the power supply element 220. The first end of the power supply element 220 is connected to the input end of the circuit, and the second end of the power supply element 220 is connected to the input end of the voltage conversion module 100; the power supply element 220 forms a voltage by releasing the energy transferred by the energy storage element 210 to maintain the voltage of the input voltage conversion module 100 when the input voltage of the circuit is powered off, thereby maintaining the target voltage.

[0106] The control module 300 is connected to the voltage conversion module 100 and the power-off holding module 200 respectively. The control module 300 is configured to collect current status information of the circuit and control the access status of the power-off holding module 200 according to the current status information so as to turn on the power-off holding module 200 when the input voltage of the circuit is powered off.

[0107] Through the above circuit structure, the current status information collected by the control module 300 can be used to control the access status of the power-off holding module 200, thereby maintaining the target voltage when the input voltage of the circuit is powered off, providing a certain amount of time for the server to back up data, and improving the reliability of the server power circuit.

[0108] In an optional embodiment, FIG2 is a circuit diagram of a server power supply circuit according to an embodiment of the present application. It should be noted that FIG2 only provides a brief circuit diagram of the relevant modules and the connection relationship between the modules. An actual server power supply circuit may include more devices or modules. FIG3 is a structural diagram of another server power supply circuit according to an embodiment of the present application. As shown in FIG2 and FIG3, the power-off retention module 200 may further include a diversion switch 230. The diversion switch 230 is configured to control the frequency and duration of energy transfer from the energy storage element 210 to the power supply element 220, thereby controlling the voltage provided by the power supply element 220. The first end of the diversion switch 230 is connected to the second end of the energy storage element 210, and the second end of the diversion switch 230 is connected to the first end of the power supply element 220. When the diversion switch 230 is turned on, the energy storage element 210 stores energy provided by the circuit input voltage. When the diversion switch 230 is turned off, the energy storage element 210 transfers energy to the power supply element 220, and the power supply element 220 releases the energy transferred by the energy storage element 210 to form a voltage. Thus, the voltage provided by the power supply element 220 is controlled by the current diversion switch 230 , thereby maintaining the voltage of the input voltage conversion module 100 when the input voltage of the circuit is powered off, thereby maintaining the target voltage.

[0109] In an optional embodiment, the control module 300 can also be connected to the diversion switch 230, and the frequency and duration of energy transfer from the energy storage element 210 to the power supply element 220 can be controlled by controlling the on-off frequency of the diversion switch 230, so as to control the on-off frequency of the diversion switch 230 in real time according to the power-off condition of the input voltage of the server power circuit, so that the voltage output by the power-off maintenance module 200 to the voltage conversion module 100 can be maintained within a constant range.

[0110] In an optional embodiment, the energy storage element 210 may be an inductor, the power supply element 220 may be a capacitor, and the current diversion switch 230 may be a transistor.

[0111] In an optional embodiment, the power-off holding module 200 may further include a filter capacitor and a diode. The first end of the filter capacitor is connected to the first end of the energy storage element 210, and the second end of the filter capacitor is connected to the second end of the diversion switch 230. The filter capacitor is configured to filter out noise interference from the voltage input to the power-off holding module 200, that is, the input voltage of the server power circuit, thereby improving the stability of the voltage output by the power-off holding module 200. The first end of the diode is connected to the second end of the energy storage element 210, and the second end of the diode is connected to the second end of the power supply element 220. The diode is configured to prevent the power supply element 220 from discharging to the ground when the diversion switch 230 is turned off.

[0112] In an optional embodiment, as shown in Figures 2 and 3, the server power supply circuit further includes a power-off hold switch 400. A first end of the power-off hold switch 400 is connected to the power-off hold module 200, a second end of the power-off hold switch 400 is connected to the voltage conversion module 100, and a third end of the power-off hold switch 400 is connected to the control module 300. The control module 300 can control the connection and / or disconnection between the power-off hold module 200 and the voltage conversion module 100 through the power-off hold switch 400 to control the connection state of the power-off hold module 200.

[0113] In an optional embodiment, as shown in FIG2 , the power-off hold switch 400 may be a transistor. In some embodiments, the control module 300 controls the conduction of the transistor, controlling the connection between the power-off hold module 200 and the voltage conversion module 100 to control the activation of the power-off hold module 200. The control module 300 controls the turn-off of the transistor, controlling the disconnection between the power-off hold module 200 and the voltage conversion module 100 to control the shutdown of the power-off hold module 200. Thus, the power-off hold switch 400 controls the connection or disconnection between the power-off hold module 200 and the voltage conversion module 100, thereby controlling the access state of the power-off hold module 200.

[0114] In an optional implementation, the power-off holding switch 400 may also be another electrically controlled switch or a digital switch.

[0115] In an optional embodiment, as shown in Figures 2 and 3, the server power supply circuit may further include a hot-swap module 500. The hot-swap module 500 is connected to the control module 300 and the control module 300, respectively. The hot-swap module 500 is configured to suppress current spikes generated by the input current when the circuit is hot-plugged; the control module 300 is configured to control the connection status of the hot-swap module 500. Thus, by connecting the hot-swap module 500 to the circuit, current spikes generated by the input current when the circuit is hot-plugged are suppressed, ensuring the stability of the input current and preventing fluctuations in the output current of the server power supply circuit.

[0116] In an optional embodiment, as shown in Figure 2, the hot-swap module 500 can suppress current spikes generated by the input current during hot-plugging of the circuit using a first transistor or electromagnetic relay, thereby ensuring smooth input current and preventing current fluctuations in the server power supply circuit. Accordingly, the hot-swap module 500 can also include devices or functional units in addition to the first transistor or electromagnetic relay to implement other auxiliary functions.

[0117] In an optional embodiment, as shown in FIG2 , the voltage conversion module 100 may be, but is not limited to, an LLC half-bridge resonant converter or a phase-shifted full-bridge converter, etc., which may be configured as a circuit structure for DC voltage conversion.

[0118] In an optional embodiment, as shown in FIG2 , the server power supply circuit may further include an electromagnetic interference filtering module, corresponding to the EMI portion in FIG2 . The electromagnetic interference filtering module is configured to filter out electromagnetic interference in the input voltage input to the server power supply circuit, and may filter out high-order harmonics and high-frequency harmonics of the input voltage, thereby achieving electromagnetic compatibility and ensuring the normal operation of the server power supply circuit.

[0119] In an optional embodiment, as shown in Figures 2 and 3, the control module 300 includes a first controller 310 and a second controller 320. The first controller 310, that is, the Pri DSP in Figure 3, and the second controller 320, that is, the Sec DSP in Figure 3, are electrically isolated by an isolator Isolated, and a communication connection is achieved based on a universal asynchronous receiver / transmitter (UART) serial port protocol. The current status information includes the input voltage and the first temperature of the input end of the server power circuit, and the output voltage and the second temperature of the output end of the voltage conversion module 100. Then in some embodiments, the first controller 310 is connected to the input end of the server power circuit to collect the input voltage and the first temperature of the input end of the circuit; the second controller 320 is connected to the output end of the voltage conversion module 100 to collect the output current and the second temperature of the output end of the voltage conversion module 100. In this way, the first controller 310 and the second controller 320 can respectively collect relevant status of the input and output ends of the voltage conversion module 100, while ensuring sampling and status information collection of each link of the server power supply, forming electrical isolation, and avoiding failures at the input end of the server power supply circuit to affect the output end.

[0120] In an optional embodiment, the first controller 310 is connected to the input of the voltage conversion module 100. Based on the input voltage, the first controller 310 determines the operating state of the circuit and controls the connection status of the power-off hold module 200, the hot-swap module 500, and / or the voltage conversion module 100. In this way, the first controller 310 can control the power-off hold module 200 and the hot-swap module 500, thereby promptly addressing voltage anomalies in the server power circuit and improving the reliability of the server power circuit.

[0121] In an optional embodiment, the first controller 310 determines the operating state of the circuit based on the first temperature and controls the connection state of the voltage conversion module 100. The second controller 320 determines the operating state of the voltage conversion module 100 based on the output current and the second temperature and controls the connection state of the voltage conversion module 100. In this way, the voltage conversion module 100 can be controlled by the first controller 310 and the second controller 320, thereby promptly handling anomalies in the server power circuit and improving the reliability of the server power circuit.

[0122] According to an embodiment of the present application, an embodiment of a server power circuit control method is provided. It should be noted that the steps shown in the flowchart of the accompanying drawings can be executed in a computer system such as a set of computer executable instructions, and although a logical order is shown in the flowchart, in some cases, the steps shown or described can be executed in an order different from that shown here.

[0123] In this embodiment, a server power circuit control method is provided, which can be used for the above-mentioned server power circuit. FIG4 is a flow chart of the server power circuit control method according to an embodiment of the present application. As shown in FIG4 , the flow chart includes the following steps:

[0124] Step S401: Acquire current status information of the server power circuit.

[0125] In the embodiment of the present application, the current status information is obtained by the control module 300 sampling each link and module in the server power circuit, and may include information such as the temperature, voltage, and current of each module.

[0126] In an optional embodiment, the current state information can be divided into current state information obtained by sampling the input end of the server power circuit and current state information obtained by sampling the output end of the voltage conversion module 100. In some embodiments, the current state information obtained by sampling the input end of the server power circuit includes the input voltage and the first temperature of the server power circuit, which can be obtained by sampling through the first controller 310; the current state information obtained by sampling the output end of the voltage conversion module 100 includes the output current and the second temperature of the voltage conversion module 100, which can be obtained by sampling through the second controller 320.

[0127] In an optional embodiment, the output current of the voltage conversion module 100 can be determined by setting a resistor at the output end of the voltage conversion module 100, and the current flowing through the resistor, that is, the output current, is calculated by sampling the voltage difference across the resistor.

[0128] Step S402: Based on the current status information, control the access status of the power-off holding module 200500100.

[0129] In the embodiment of the present application, the control module 300 controls the access state of the power-off holding module 200500100 based on the current state information, which in some embodiments is the input voltage of the server power circuit. The access state can include on and off, that is, controlling the power-off holding module 200 to be on and off.

[0130] In an optional embodiment, the current status information also includes the first temperature of the server power circuit, and the output current and second temperature of the voltage conversion module 100. Accordingly, for different conditions of the output current, first temperature and second temperature, the control module 300 can also control the access status of the 200500100 hot-swap module 500 and the voltage conversion module 100.

[0131] In an optional implementation, when the current status information is the input voltage of the server power circuit, the above step S402 can be divided into the following cases:

[0132] In the first case, when the input voltage is less than a first preset voltage, the server power circuit is determined to be in a power-off state, and an input undervoltage alarm is sent. By controlling the power-off hold switch 400 to be open, the power-off hold module 200 is connected to the voltage conversion module 100, thereby activating the power-off hold module 200. The first preset voltage is lower than the normal input voltage of the server power circuit, but higher than the voltage in the undervoltage state. In this case, the input voltage of the server power circuit may be low due to voltage fluctuations or other factors. By boosting the input voltage by the power-off control module 300, the voltage value of the input voltage conversion module 100 can be normalized, ensuring that the target voltage output by the server power circuit is normal. Therefore, when the input voltage of the server power circuit is in a power-off state but is still not undervoltage, the voltage of the input voltage conversion module 100 is maintained by the power-off holding module 200 to ensure the size of the target voltage output by the server power circuit, so as to reserve a certain time for the server to back up the relevant data therein, thereby avoiding the subsequent continuous undervoltage of the input voltage of the server power circuit, which may cause the server to malfunction and data loss. At the same time, an input undervoltage alarm message is sent to remind the user end to check and adjust the input voltage in time to avoid undervoltage of the input voltage.

[0133] In the second case, when the input voltage is greater than or equal to the first preset voltage, the server power circuit is determined to be operating normally. By controlling the power-off hold switch 400 to be turned off, the power-off hold module 200 and the voltage conversion module 100 are disconnected, thereby shutting down the power-off hold module 200. At this point, the input voltage has returned to normal, and the power-off hold module 200 no longer needs to boost the input voltage, so the power-off hold module 200 is shut down.

[0134] In the third case, when the input voltage is less than a third preset voltage, the server power circuit is determined to be in an undervoltage state, an input undervoltage fault message is transmitted, and the hot-swap module 500 and the voltage conversion module 100 are controlled to shut down. The third preset voltage is less than the first preset voltage and greater than the second preset voltage. The third preset voltage is the input voltage in the undervoltage state. When the input voltage is less than the third preset voltage, it can be confirmed that the input voltage of the server power circuit is in an undervoltage state, but not completely powered off. At this time, relying solely on the power-off control module 300 to boost the input voltage is no longer sufficient to raise the voltage value of the input voltage conversion module 100 to a normal value. Therefore, the hot-swap module 500 and the voltage conversion module 100 are shut down, and the power-off hold module 200 directly outputs the voltage as the output voltage of the server power circuit. This also provides a certain amount of time for the server to perform operations to retain necessary data, avoiding data loss caused by sudden power outages. Therefore, when the input voltage of the service power circuit is in an undervoltage state, the hot-swap module 500 and the voltage conversion module 100 are turned off, and the power-off holding module 200 is relied upon to maintain the target voltage of the output of the server power circuit. At the same time, input undervoltage fault information is sent to remind the user end to check and adjust the input voltage in time to avoid the input voltage being undervoltage all the time or even a complete power outage.

[0135] In the fourth scenario, when the input voltage is less than a second preset voltage, the server power circuit is determined to be in a complete power-off state, and an input undervoltage fault message is transmitted. By controlling the power-off holding switch 400 to be turned off, the power-off holding module 200 and the voltage conversion module 100 are disconnected, thereby shutting down the power-off holding module 200. The second preset voltage is less than the first and third preset voltages, and the second preset voltage represents the input voltage in a complete power-off state. At this point, the voltage directly output by the power-off control module 300 is unable to maintain the output voltage of the server power circuit, and therefore the power-off holding module 200 is shut down. Therefore, when the input voltage of the server power circuit is in a complete power-off state and the power-off holding module 200 alone cannot maintain the target output voltage of the server power circuit, the power-off holding module 200 is also shut down, and an input undervoltage fault message is transmitted, prompting the user to promptly check and adjust the input voltage.

[0136] In an optional implementation, when the current state information is the output current of the voltage conversion module 100, the above step S402 includes the following situations:

[0137] In the first case, when the output current exceeds a first preset current, the voltage conversion module 100 is determined to be in an overcurrent alarm state, and an output overcurrent alarm message is sent. The first preset current may be the maximum current under normal conditions. When the output current exceeds the first preset current, the voltage conversion module 100 is experiencing an overcurrent, generating an overcurrent anomaly. However, the voltage conversion module 100 is still operational, so only the output overcurrent alarm message is sent to alert the user to promptly troubleshoot and adjust the voltage conversion module 100.

[0138] In the second case, when the output current is greater than the second preset current, the operating state of the voltage conversion module 100 is determined to be an overcurrent fault state, and output overcurrent fault information is sent; the voltage conversion module 100 is controlled to shut down. The second preset current is greater than the first preset current. When the output current is greater than the second preset current, it can be determined that an overcurrent fault has occurred in the voltage conversion module 100. At this time, the voltage conversion module 100 cannot operate normally, or even if it can continue to operate, it will gradually cause abnormalities or failures due to the overcurrent fault, or transmit the abnormality to the server. Therefore, it is necessary to shut down the voltage conversion module 100 to prevent the overcurrent of the output current from causing further failures and damage to related components. At the same time, the output overcurrent fault information is sent to remind the user end to promptly check and adjust the voltage conversion module 100.

[0139] Through the above method, the first preset current is set to the recovery value, and the second preset current is set to the overcurrent value, forming hysteresis control. The output current is only considered normal when the output current is lower than the first preset current, so as to ensure that the adjustment of the output current can actually reduce the output current to the normal current value, thereby improving reliability.

[0140] In an optional implementation, when the current status information is the first temperature of the server power circuit, step S402 includes the following situations:

[0141] In the first case, when the first temperature is greater than a first preset temperature, the server power circuit is determined to be in an overtemperature alarm state, and a first overtemperature alarm message is sent. The first preset temperature may be the maximum temperature under normal conditions. When the first temperature is greater than the first preset temperature, the server power circuit experiences overcurrent, resulting in an overcurrent anomaly. However, the server power circuit is still operational, so only the first overtemperature alarm message is sent to remind the user to promptly troubleshoot and adjust the server power circuit.

[0142] In the second case, when the first temperature is greater than the second preset temperature, the operating state of the server power circuit is determined to be an overtemperature fault state, and a first overtemperature fault message is sent; the voltage conversion module 100 is controlled to shut down. The second preset temperature is greater than the first preset temperature. When the output temperature is greater than the second preset temperature, it can be confirmed that an overtemperature fault has occurred in the server power circuit. In this case, the server power circuit cannot operate normally, or even if it can continue to operate, it will gradually cause abnormalities or failures due to overcurrent, or transmit the abnormality to the server. Therefore, it is necessary to shut down the voltage conversion module 100 to cut off the server power current to prevent the first overtemperature from causing further failures and damage to related components. At the same time, the first overtemperature fault message is sent to remind the user end to promptly check and adjust the server power circuit.

[0143] Through the above method, the first preset temperature is set to the recovery value, and the second preset temperature is set to the overtemperature value, forming a hysteresis control. The first temperature is considered normal only when it is lower than the first preset temperature, so as to ensure that the adjustment of the first temperature can actually reduce the first temperature to the normal temperature value, thereby improving reliability.

[0144] In an optional implementation, when the current state information includes the second temperature of the voltage conversion module 100, the above step S402 may include:

[0145] In the first case, when the second temperature is greater than a third preset temperature, the voltage conversion module 100 is determined to be in an overtemperature alarm state, and a second overtemperature alarm message is sent. The third preset temperature may be the maximum temperature under normal conditions. When the second temperature is greater than the third preset temperature, the voltage conversion module 100 experiences an overcurrent, generating an overcurrent anomaly. However, the server power supply circuit remains operational, so only the second overtemperature alarm message is sent to alert the user to promptly troubleshoot and adjust the voltage conversion module 100.

[0146] In the second case, when the second temperature is greater than the fourth preset temperature, the operating state of the voltage conversion module 100 is determined to be an overtemperature fault state, and a second overtemperature fault message is transmitted; the voltage conversion module 100 is controlled to shut down. The fourth preset temperature is greater than the third preset temperature. When the output temperature is greater than the fourth preset temperature, it can be determined that the voltage conversion module 100 has experienced an overtemperature fault. In this case, the voltage conversion module 100 cannot operate normally, or even if it can continue to operate, it will gradually cause abnormalities or failures due to overcurrent, or transmit the abnormality to the server. Therefore, it is necessary to shut down the voltage conversion module 100 to cut off the server power current to prevent the second overtemperature from causing further failures and damage to related components. At the same time, the second overtemperature fault message is transmitted to the user end to prompt the voltage conversion module 100 to be promptly checked and adjusted.

[0147] Through the above method, the third preset temperature is set to the recovery value, and the fourth preset temperature is set to the overtemperature value, forming a hysteresis control. The second temperature is considered normal only when it is lower than the third preset temperature, so as to ensure that the adjustment of the second temperature can actually reduce the second temperature to the normal temperature value, thereby improving reliability.

[0148] In an optional embodiment, Figure 5 is a flow chart of a specific embodiment of the server power circuit control method according to an embodiment of the present application. As shown in Figure 5, when the server power circuit is started, the control module 300 samples the temperature of the voltage conversion module 100, that is, the second temperature, the temperature of the server power circuit, that is, the first temperature, the input voltage of the server power circuit, and the output current of the server power circuit, respectively, makes judgments on them, and executes steps such as the above-mentioned step S402 to timely regulate the server power circuit.

[0149] The server power supply current control method provided in the embodiment of the present application can control the opening and / or closing of the power-off holding module 200, the hot-swap module 500 and / or the voltage conversion module 100 according to the current status information of the server power supply circuit, thereby promptly handling abnormalities occurring in the server power supply circuit and improving the reliability of the server power supply circuit.

[0150] In this embodiment, a server power circuit control method is provided, which can be used for the above-mentioned server power circuit. FIG6 is a flow chart of another server power circuit control method according to an embodiment of the present application. As shown in FIG6 , the flow chart includes the following steps:

[0151] Step S601: Acquire current status information of the server power circuit.

[0152] In some embodiments, step S601 includes:

[0153] Step S6011: Obtain status information of the server power circuit at every preset time.

[0154] In an embodiment of the present application, various status information of the server power circuit is collected at preset time intervals. In some embodiments, the input voltage and first temperature of the server power circuit, and the output current and second temperature of the voltage conversion module 100 are collected respectively.

[0155] In an optional implementation, the preset time corresponding to each state information, that is, the input voltage, the first temperature, the output current, and the second temperature, that is, the sampling time may be different and may be set according to actual needs.

[0156] Step S6012: perform average processing on the obtained preset number of state information, and use the state information after the average processing as the current state information.

[0157] In the embodiment of the present application, average processing is performed on each of the preset number of status information obtained, and the status information after the average processing is used as the current status information.

[0158] In an optional embodiment, a data set can be set for each state information, that is, an input voltage set, a first temperature set, an output current set, and a second temperature set. Then, the collected information is placed in the corresponding data set, and the preset number of latest data in each data set is averaged at each sampling moment to obtain the corresponding current state information.

[0159] In an optional implementation, a corresponding sampling period may be set for each state information, each state information is collected a preset number of times in each sampling period, and the state information obtained the preset number of times is averaged to obtain the current state information.

[0160] Step S602: Based on the current state information, the access state of the power-off holding module 200500100 is controlled. For details, please refer to step S502 of the embodiment shown in FIG5 , which will not be described in detail here.

[0161] The server power supply current control method provided in the embodiment of the present application obtains current status information by taking the average value of multiple samples, thereby avoiding the problem of inaccurate data obtained by a single sampling and improving the reliability and accuracy of the server power supply circuit control.

[0162] Although the embodiments of the present application have been described with reference to the accompanying drawings, those skilled in the art may make various modifications and variations without departing from the spirit and scope of the present application, and such modifications and variations shall fall within the scope defined by the appended claims.

Claims

1. A server power supply circuit, characterized in that: The circuit comprises: a voltage conversion module (100), a power-off holding module (200) and a control module (300); The input end of the voltage conversion module (100) is connected to the power-off holding module (200); the voltage conversion module (100) is configured to convert the input voltage of the voltage conversion module (100) into a target voltage; the target voltage is used to supply power to the server; The power-off holding module (200) is configured to maintain the magnitude of the target voltage when the input voltage of the circuit is powered off; the power-off holding module (200) comprises an energy storage element (210) and a power supply element (220); The first end of the energy storage element (210) is connected to the input end of the circuit, and the second end of the energy storage element (210) is connected to the input end of the voltage conversion module (100); the energy storage element (210) is configured to store energy provided by the input voltage of the circuit and transfer the energy to the power supply element (220); The first end of the power supply element (220) is connected to the input end of the circuit, and the second end of the power supply element (220) is connected to the input end of the voltage conversion module (100); the power supply element (220) forms a voltage by releasing the energy transmitted by the energy storage element (210), so as to maintain the voltage input to the voltage conversion module (100) when the input voltage of the circuit is powered off, thereby maintaining the magnitude of the target voltage; The control module (300) is connected to the voltage conversion module (100) and the power-off holding module (200) respectively, and the control module (300) is configured to collect current state information of the circuit and control the access state of the power-off holding module (200) according to the current state information, so as to start the power-off holding module (200) when the input voltage of the circuit is powered off.

2. The circuit according to claim 1, characterized in that The power-off holding module (200) further comprises a current guiding switch (230); the current guiding switch (230) is configured to control the frequency and duration of energy transfer from the energy storage element (210) to the power supply element (220), so as to control the magnitude of the voltage provided by the power supply element (220); The first end of the flow diversion switch (230) is connected to the second end of the energy storage element (210), and the second end of the flow diversion switch (230) is connected to the first end of the power supply element (220); When the diversion switch (230) is turned on, the energy storage element (210) stores energy provided by the input voltage of the circuit; When the diversion switch (230) is disconnected, the energy storage element (210) transfers energy to the power supply element (220), and the power supply element (220) releases the energy transferred by the energy storage element (210) to form a voltage.

3. The circuit according to claim 1, characterized in that The circuit further comprises a power-off holding switch (400); a first end of the power-off holding switch (400) is connected to the power-off holding module (200), a second end of the power-off holding switch (400) is connected to the voltage conversion module (100), and a third end of the power-off holding switch (400) is connected to the control module (300); The control module (300) controls the connection and / or disconnection between the power-off holding module (200) and the voltage conversion module (100) through a power-off holding switch (400) to control the access state of the power-off holding module (200).

4. The circuit according to claim 1, characterized in that The power-off holding switch (400) is a transistor; The control module (300) controls the conduction of the transistor, controls the power-off holding module (200) to be connected to the voltage conversion module (100), and controls the opening of the power-off holding module (200); Alternatively, the control module (300) controls the transistor to be turned off, controls the power-off holding module (200) and the voltage conversion module (100) to be disconnected, and controls the power-off holding module (200) to be turned off.

5. The circuit according to claim 1, characterized in that The circuit further comprises a hot-swap module (500), wherein the hot-swap module (500) is connected to the control module (300) and the control module (300) respectively; The hot-swap module (500) is configured to suppress a current spike generated by an input current when the circuit is plugged in and out while it is powered on; The control module (300) is configured to control the access state of the hot-swap module (500).

6. The circuit according to claim 1, characterized in that The control module (300) comprises a first controller (310) and a second controller (320); the first controller (310) and the second controller (320) are electrically isolated and communicatively connected; The current state information includes the input voltage and the first temperature of the input terminal of the circuit, and the input The output current and the second temperature of the output terminal; The first controller (310) is connected to the input end of the circuit, and the first controller (310) is configured to collect the input voltage and the first temperature; The second controller (320) is connected to the output end of the voltage conversion module (100), and the second controller (320) is configured to collect the output current and the second temperature.

7. The circuit according to claim 6, characterized in that The first controller (310) is connected to an input end of the voltage conversion module (100); The first controller (310) determines the working state of the circuit according to the input voltage, and controls the access state of the power-off holding module (200), the hot-swap module (500) and / or the voltage conversion module (100).

8. The circuit according to claim 6, characterized in that The first controller (310) determines the working state of the circuit according to the first temperature, and controls the access state of the voltage conversion module (100); The second controller (320) determines the working state of the voltage conversion module (100) according to the output current and the second temperature, and controls the access state of the voltage conversion module (100).

9. A method for controlling a server power circuit, characterized in that: Applied to the server power supply circuit according to any one of claims 1 to 8, the method comprises: Obtaining current status information of the server power circuit; Based on the current state information, the access state of the power-off holding module (200) is controlled.

10. The method according to claim 9, characterized in that The current state information includes an input voltage at an input end of the server power supply circuit; and controlling the access state of the power-off holding module (200) based on the current state information includes: When the input voltage is less than a first preset voltage, determining that the working state of the server power supply circuit is a power-off state, and sending input undervoltage alarm information; By controlling the power-off holding switch (400) to be turned on, the power-off holding module (200) and the voltage conversion module (100) are controlled to be connected, so as to start the power-off holding module (200).

11. The method according to claim 10, characterized in that The method of controlling the access state of the power-off holding module (200) based on the current state information further comprises: When the input voltage is greater than or equal to the first preset voltage, determining that the working state of the server power supply circuit is a normal state; By controlling the power-off holding switch (400) to be turned off, the power-off holding module (200) and the voltage conversion module (100) are controlled to be disconnected, so as to shut down the power-off holding module (200).

12. The method according to claim 10, characterized in that The method of controlling the access state of the power-off holding module (200) based on the current state information further comprises: When the input voltage is less than a second preset voltage, determining that the working state of the server power supply circuit is a complete power-off state, and sending input undervoltage fault information; the second preset voltage is less than the first preset voltage; By controlling the power-off holding switch (400) to be turned off, the power-off holding module (200) and the voltage conversion module (100) are controlled to be disconnected, so as to shut down the power-off holding module (200).

13. The method according to claim 9, characterized in that The method further comprises: Based on the current status information, the access status of the hot-swap module (500) and / or the voltage conversion module (100) is controlled.

14. The method according to claim 13, characterized in that The current state information includes the input voltage of the input end of the server power supply circuit; and the control of the access state of the hot-swap module (500) and / or the voltage conversion module (100) based on the current state information includes: When the input voltage is less than a third preset voltage, determining that the working state of the server power supply circuit is an undervoltage state, and sending input undervoltage fault information; the third preset voltage is less than the first preset voltage and greater than the second preset voltage; The hot-swap module (500) and the voltage conversion module (100) are controlled to be turned off.

15. The method according to claim 13, characterized in that The current state information includes the output current of the voltage conversion module (100); and controlling the access state of the hot-swap module (500) and / or the voltage conversion module (100) based on the current state information includes: When the output current is greater than a first preset current, it is determined that the working state of the voltage conversion module (100) is an overcurrent alarm state, and output overcurrent alarm information is sent.

16. The method according to claim 15, characterized in that The method of controlling the access state of the hot-swap module (500) and / or the voltage conversion module (100) based on the current state information further comprises: When the output current is greater than a second preset current, determining that the working state of the voltage conversion module (100) is an overcurrent fault state, and sending the output overcurrent fault information; the second preset current is greater than the first preset current; The voltage conversion module (100) is controlled to be turned off.

17. The method according to claim 13, characterized in that The current state information includes a first temperature of the server power supply circuit; and controlling the access state of the hot-swap module (500) and / or the voltage conversion module (100) based on the current state information includes: When the first temperature is greater than a first preset temperature, it is determined that the working state of the server power supply circuit is an over-temperature alarm state, and a first over-temperature alarm message is sent.

18. The method according to claim 17, characterized in that The method of controlling the access state of the hot-swap module (500) and / or the voltage conversion module (100) based on the current state information further includes: When the first temperature is greater than a second preset temperature, determining that the working state of the server power supply circuit is an over-temperature fault state, and sending a first over-temperature fault message; the second preset temperature is greater than the first preset temperature; The voltage conversion module (100) is controlled to be turned off.

19. The method according to claim 13, characterized in that The current state information includes the second temperature of the voltage conversion module (100); and controlling the access state of the hot-swap module (500) and / or the voltage conversion module (100) based on the current state information includes: When the second temperature is greater than a third preset temperature, it is determined that the working state of the voltage conversion module (100) is an over-temperature alarm state, and second over-temperature alarm information is sent.

20. The method according to claim 19, characterized in that The method of controlling the access state of the hot-swap module (500) and / or the voltage conversion module (100) based on the current state information further comprises: When the second temperature is greater than a fourth preset temperature, determining that the working state of the voltage conversion module (100) is an over-temperature fault state, and sending second over-temperature fault information; the fourth preset temperature is greater than the third preset temperature; The voltage conversion module (100) is controlled to be turned off.

21. The method according to claim 9, characterized in that Obtaining current status information of the server power circuit, including: Obtaining status information of the server power circuit at preset intervals; Perform average processing on the acquired preset number of state information, and use the state information after the average processing as the current state information.

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