A power protection circuit, method, and server

Abstract

The application discloses a power supply protection circuit and method and a server, relates to the technical field of servers, and comprises a first protection component arranged in a power supply loop of a power supply, wherein the first protection component is used for detecting a power supply parameter of a power supply output end of the power supply, and a control component is used for controlling the first protection component to timely execute a protection action to disconnect the power supply loop where the first protection component is located when the control component determines that the power supply parameter detected by the first protection component meets an abnormal protection condition, thereby solving the problem of damage to a rear-end load caused by untimely abnormal protection of the power supply loop, and achieving the technical effect of improving the operation stability and safety of the server.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of servers, and in particular to a power supply protection circuit, method and server. BACKGROUND

[0002] Servers are rapidly developing towards high computing power and high integration. In order to meet the computing power requirements, the input power of a single cabinet power supply has been increased from the traditional kilowatt level to tens of kilowatt levels, and the current and voltage fluctuation range of the power supply system has been expanded. In this scenario, abnormal working conditions (such as instantaneous overcurrent and voltage surge / drop) of the power supply circuit occur frequently, and if protection is not timely, it is easy to cause damage to the backend load and affect the normal operation of the server.

[0003] Therefore, how to provide a solution to the above technical problems is a problem that those skilled in the art need to solve at present. SUMMARY

[0004] The present application provides a power supply protection circuit, method and server to at least solve the problem of damage to the backend load caused by untimely abnormal protection of the power supply circuit in the related art.

[0005] The present application provides a power supply protection circuit, comprising:

[0006] A first protection component is arranged in a power supply circuit of a power supply and is configured to detect a power supply parameter of the power supply and to disconnect the power supply of a corresponding load in the power supply circuit in response to a control signal;

[0007] A control component is connected to the first protection component and is configured to generate the control signal when the power supply parameter meets an abnormal protection condition.

[0008] The present application also provides a power supply protection method applied to the power supply protection circuit as described in any one of the above, comprising:

[0009] Obtaining the power supply parameter of the power supply detected by the first protection component arranged in the power supply circuit of the power supply;

[0010] When the power supply parameter meets the abnormal protection condition, the first protection component is controlled to be disconnected to disconnect the power supply of the corresponding load in the power supply circuit.

[0011] The present application also provides a server comprising at least one power supply and a load, and a power supply protection circuit as described in any one of the above connected to the power supply and the load.

[0012] Through the application, since the first protection component is arranged in the power supply circuit of the power supply, the power supply parameter of the power supply output end of the power supply is detected by the first protection component, and when the control component determines that the power supply parameter detected by the first protection component meets the abnormal protection condition, the first protection component timely executes the protection action to disconnect the power supply circuit where the first protection component is located, the problem that the protection is not timely and causes the damage of the rear-end load is solved, and the effect that the server is ensured to be safely and reliably operated is achieved. BRIEF DESCRIPTION OF DRAWINGS

[0013] In order to more clearly illustrate the embodiments of the present application, the drawings needed to be used in the embodiments will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0014] Figure 1 The structural schematic diagram of the first power supply protection circuit provided for the embodiments of the present application is shown in the figure.

[0015] Figure 2 The structural schematic diagram of the second power supply protection circuit provided for the embodiments of the present application is shown in the figure.

[0016] Figure 3 The structural schematic diagram of the third power supply protection circuit provided for the embodiments of the present application is shown in the figure.

[0017] Figure 4 The structural schematic diagram of the fourth power supply protection circuit provided for the embodiments of the present application is shown in the figure.

[0018] Figure 5 The structural schematic diagram of the detection module provided for the embodiments of the present application is shown in the figure.

[0019] Figure 6 The step flow chart of the power supply protection method provided for the embodiments of the present application is shown in the figure. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present application will be described clearly and completely in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are only some embodiments of the present application, but not all the embodiments. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative labor are within the protection scope of the present application.

[0021] It should be noted that in the description of the present application, the term "comprising", "containing" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed, or further includes elements inherent to such a process, method, article or device. The terms "first", "second" and the like in the present application are used to distinguish similar objects, not to describe a specific order or sequence.

[0022] In order to enable those skilled in the art to better understand the present application, the present application will be further described in detail below in conjunction with the drawings and specific embodiments.

[0023] In the first aspect, refer to Figure 1 , Figure 1 The structure diagram of a power supply protection circuit provided by the present application, the power supply protection circuit comprises:

[0024] The first protection component 2 is arranged in the power supply circuit of the power supply 1, configured to detect the power supply parameter of the power supply 1, and to disconnect the power supply of the corresponding load in the power supply circuit in response to the control signal;

[0025] The control component 3 is connected with the first protection component 2, configured to generate the control signal when the power supply parameter meets the abnormal protection condition.

[0026] In the embodiment, the server comprises the power supply 1, when the power supply 1 is one, the power supply output end of the power supply 1 is one end of the secondary winding of the transformer of the power supply 1, the other end of the secondary winding is grounded, one end of the primary winding is connected with the live wire L, the number of the power supply 1 can also be multiple, refer to Figure 2 , the first end of the secondary winding of the transformer of the multiple power supplies 1 is connected with each other after the common end as the power supply output end of the power supply 1.

[0027] It can be understood that the power supply output end of the power supply 1 is connected to different loads (such as Figure 1The power supply load end Z1 and the power supply load end Z2 in the power supply circuit, each branch corresponds to the voltage requirement of a specific load (for example, 12V, 5V, etc.), and voltage adaptation can be achieved through an additional voltage regulation module (such as a DC-DC converter). In this embodiment, the power supply circuit refers to the complete current path from the power supply output to the load and eventually back to the power supply end. The main function of the power supply circuit is to transmit electrical energy from the power supply to the load and ensure that the current can flow safely and effectively. It can be understood that a power supply circuit can include multiple power supply branches. A power supply branch refers to a circuit portion that branches from a certain point (usually the power supply output end) of the power supply circuit and is directly connected to a specific load. The first protection component 2 in this embodiment can be arranged at a specific position of the power supply circuit to detect the power supply parameters of the power supply 1 and perform corresponding protection actions. The power supply parameters include but are not limited to voltage parameters, current parameters, and temperature parameters. It can be understood that the first protection component 2 can have multiple ones arranged on multiple power supply branches in the power supply circuit.

[0028] The first protection component 2 is connected with the control component 3, and the detected power supply parameters are transmitted to the control component 3. The control component 3 compares the power supply parameters with the corresponding preset threshold value. If the power supply parameters reach the corresponding preset threshold value, the control component 3 generates a control signal and outputs the control signal to the corresponding first protection component 2 on the power supply circuit. The first protection component 2 responds to the control signal and disconnects the power supply of the power supply branch where the first protection component 2 is located on the power supply circuit, thereby accurately isolating the fault branch and avoiding global power failure.

[0029] In an exemplary embodiment, the first protection component 2 includes:

[0030] The switch module 21 is connected in series in the power supply circuit of the power supply 1. The control end of the switch module 21 is connected to the control end of the control component 3. The switch module 21 is configured to disconnect the power supply of the corresponding load in the power supply circuit in response to the control signal.

[0031] The detection module 22 is connected to the power supply output end of the power supply 1 and the first detection end of the control component 3. The detection module 22 is configured to detect the power supply parameters of the power supply output end of the power supply 1.

[0032] In this embodiment, the first protection component 2 includes the switch module 21 and the detection module 22. The switch module 21 and the detection module 22 adopt a separate design scheme. The switch module 21 is connected in series in the power supply circuit of the power supply 1, and specifically can be connected in series in the corresponding power supply branch of the power supply circuit. Specifically, as shown in FIG. 1, the switch module 21 is connected in series in the power supply branch corresponding to the load 1. Figure 3As shown, the switch module 21 is arranged between the secondary winding of the transformer and the corresponding load. The detection module 22 is arranged on the power supply branch, the first end of the detection module 22 is connected with the power supply output end of the power supply 1, and the second end of the detection module 22 is connected with the first detection end of the control component 3, for detecting the power supply parameters (such as voltage, current, temperature, etc.) on the power supply branch in real time, and feeding back the power supply parameters to the control component 3, which can be transmitted to the control component 3 through analog signal or digital communication (such as ADC (Analog-to-Digital Converter) conversion). Based on the power supply parameters monitored by the detection module 22, the control component 3 judges whether the power supply parameters meet the abnormal protection condition, if yes, sends a control signal to the switch module 21 on the power supply branch where the detection module 22 is located, and the switch module 21 is disconnected after receiving the control signal, thereby cutting off the power supply branch and stopping the power supply to the load on the power supply branch, while the other branches remain normal operation.

[0033] The switch module 21 can be selected from a smart relay, a MOSFET (Metal-Oxide-Semiconductor Field-Effect Transistor) or a solid-state relay (SSR, Solid-State Relay), etc., which has the characteristics of high voltage resistance and fast response. In this embodiment, the detection module 22 and the switch module 21 are independently configured to avoid interference between the monitoring and execution functions, ensure that only the faulty branch is cut off, and the non-faulty part is not affected. Modular design allows individual replacement of detection or switch components, reduces maintenance costs, and only needs to copy the module combination when adding a branch without the need to reconstruct the whole system. The detection signal and the control signal are separated (such as using photoelectric isolation technology), which reduces the interference of electromagnetic noise in the power supply circuit on the control logic.

[0034] In an exemplary embodiment, with reference to Figure 4 The switch module 21 includes a plurality of parallel switch tubes, and the control ends of the plurality of switch tubes are connected with the control end of the control component 3.

[0035] It can be understood that in a high-power scenario (such as a server power supply branch), a large current may cause a single switch tube to overheat or burn out. The switch module 21 in this embodiment can be built by a plurality of parallel switch tubes. The parallel design reduces the pressure on a single tube through current sharing, disperses power loss to multiple devices, reduces the temperature rise of a single tube, and reduces the heat dissipation design pressure. If a switch tube fails due to aging, overcurrent or short circuit, other parallel switch tubes can still maintain the on-off function of the circuit, avoiding complete loss of protection function. In addition, the parallel path shortens the current cut-off time, especially in high-frequency or transient scenarios (such as short-circuit protection), multiple tubes can work together to complete the action faster.

[0036] In the embodiment, the plurality of parallel switch tubes can select switch tubes with consistent parameters to ensure synchronous operation of all switches and realize large current protection.

[0037] In an exemplary embodiment, the detection module 22 comprises a sampling resistor, a first end of the sampling resistor is connected to the power output end of the power supply 1 and the control component 3, and a second end of the sampling resistor is connected to the switch module 21 and the control component 3.

[0038] In the embodiment, the sampling resistor can be a precision resistor, one end of the sampling resistor is connected to the power output end of the power supply 1, and the second end of the sampling resistor is connected to the switch module 21, that is, the sampling resistor is connected in series on the power supply branch, the first sampling end of the control component 3 is connected to the first end of the sampling resistor, and the second sampling end of the control component 3 is connected to the second end of the sampling resistor, by measuring the voltage drop across the sampling resistor, the current value of the power supply branch is reflected in real time.

[0039] Specifically, the control component 3 can collect the small voltage signal across the sampling resistor through a differential amplifier or a special current detection chip. After amplification and filtering, the signal is converted into a digital quantity by an ADC for analysis by the control component 3. The control component 3 compares the real-time current value or the real-time voltage value directly with the corresponding preset threshold value, and generates a control signal if it is out of limit.

[0040] In the embodiment, the sampling resistor should be close to the input end of the switch module 21 to shorten the high current path and reduce the measurement error introduced by parasitic impedance.

[0041] In an exemplary embodiment, with reference to Figure 5 , the detection module 22 comprises a conductor segment connecting the power input terminal and the power output terminal on the board card, and a measurement point (such as the bridge head measurement point and the bridge tail measurement point in Figure 5 ) arranged at both ends of the conductor segment, the measurement point is connected to the control component 3, the power input terminal is connected to the power output end of the power supply 1, and the power output terminal is connected to the corresponding load on the board card.

[0042] In this embodiment, in addition to the external sampling resistor, the detection module 22 can also reserve a conductor section with a preset impedance (which can be a copper foil trace on a PCB or a dedicated metal strip) on the board to realize the function of the sampling resistor. One end of the conductor section is connected to the power input terminal on the board, and the other end of the conductor section is connected to the power output terminal on the board. The power input terminal is connected to the power output terminal of the power supply 1, and the power output terminal is connected to the corresponding load on the board. Measuring points are provided at both ends of the conductor section, and the measuring points are connected to the control component 3 through connecting lines. Specifically, the measuring points are connected to the differential input port of the control component 3 through connecting lines to eliminate the lead resistance error. The control component 3 can obtain the voltage drop across the conductor section to sample the power supply parameters on the power supply branch. According to the target detection accuracy and current range, the inherent impedance of the conductor section can be calculated by adjusting the length L, width W, thickness, and material (such as copper foil resistivity) of the conductor section. The size of the conductor section can be set according to the actual engineering needs to meet the sampling accuracy requirements and path loss requirements. This embodiment does not make specific limitations here.

[0043] The board reserving the conductor section is the board on which the load and the switching module 21 are arranged. By reserving a conductor section with a preset impedance on the board, the use of discrete components on the board can be reduced, which is suitable for high-density board design (such as a server power board). The conductor section is integrally formed with the board to avoid problems such as disconnection or poor contact caused by vibration and temperature change of discrete resistors. The parasitic parameters (inductance and capacitance) are controllable, which is beneficial to signal integrity in high-frequency scenarios. Because no additional sampling resistor is needed, the detection module 22 can be flexibly arranged on the board to adapt to different circuit designs and layout requirements.

[0044] In an example embodiment, the conductor section is composed of at least one conductive layer on the board.

[0045] In this embodiment, the conductor section can be composed of one conductive layer on the board or multiple conductive layers. The conductive layer can be a copper layer or other conductive material layer on the board. Copper and other conductive materials have excellent electrical conductivity, which can ensure efficient transmission of current in the conductor section and reduce energy loss. The conductor section can also be regarded as a current transmission channel with a width W between the two sides of the channel. The channel can be a parallel channel. A rectangular conductor section can be selected, which has a consistent width along the path to ensure the standardization of the impedance parameters of the conductor section.

[0046] In an example embodiment, the conductor section is a multi-layer structure composed of multiple interconnected conductive layers, and multiple interconnected vias are provided on the power input terminal and the power output terminal.

[0047] In this embodiment, when the conductor segment is composed of multiple interconnected conductive layers, multiple interconnected vias are provided on the power input terminal and the power output terminal. The interconnected vias are vertical channels connecting different conductive layers, allowing current to flow between different layers. By reasonably designing the number and distribution of viias, the balanced distribution of current between layers can be ensured, and overheating or damage caused by excessive current in a layer can be avoided. It can be understood that the multi-layer structure can arrange more circuits in a limited space, improve the integration and density of the circuit, and help reduce interference and crosstalk in signal transmission, and improve the integrity of the signal.

[0048] The number of interconnected vias is usually determined according to the current demand of the circuit. For example, if the circuit needs to pass through 30A of current, the number of vias is usually designed to be 30 or more to ensure uniform distribution of current. The number of interconnected vias can also be appropriately reduced, but it needs to ensure that it does not affect the balanced distribution of current and the performance of the circuit. The arrangement of vias can be close or dispersed, depending on the design requirements of the circuit and the process capability of the PCB board factory.

[0049] In an exemplary embodiment, the conductive layers constituting the conductor segment and the power input terminal and the power output terminal are arranged on different layers of the board card, and the conductive layers constituting the conductor segment are connected to the power input terminal and the power output terminal through vias; or, the conductive layers constituting the conductor segment and the power input terminal and the power output terminal are arranged on the same layer of the board card.

[0050] In this embodiment, the power input terminal and the power output terminal can be specifically a power input copper foil and a power output copper foil on the board card. In this embodiment, the layout design of the conductor segment and the power input terminal and the power output terminal has certain flexibility, mainly existing the following two cases:

[0051] The conductor segment and the power terminal are arranged in layers, that is, the conductive layers constituting the conductor segment and the power input terminal and the power output terminal are arranged on different layers of the board card. In this case, the conductive layers constituting the conductor segment are connected to the power input terminal and the power output terminal through vias. As a common connection method in PCB board design, the via can realize the electrical connection between different layers, ensure that the current can be smoothly transmitted from the power input terminal to the conductor segment, and then from the conductor segment to the power output terminal, and then connected to the corresponding load. This layered layout method is beneficial to optimize the space utilization of the board card, especially in high-density board card design, which can effectively alleviate the wiring pressure on the same layer and provide more space for the layout of other elements and circuits.

[0052] The conductor segment and the power terminal are arranged in the same layer, and the conductive layer constituting the conductor segment and the power input terminal and the power output terminal are arranged on the same layer of the board card. At this time, the power input terminal and the power output terminal can be a power input copper foil and a power output copper foil on the board card. The copper foil of the conductor segment and the power input / output copper foil can be arranged on the same layer or different layers. When the copper foil of the conductor segment is multi-layered, one layer can be arranged on the same layer as the power input / output copper foil. This same layer arrangement can simplify the manufacturing process of the board card, reduce the number of vias used, and reduce potential reliability problems and manufacturing costs caused by vias in some cases. At the same time, the same layer arrangement also facilitates wiring optimization and debugging during the design stage, allowing for more intuitive observation and adjustment of the connection relationship between the conductor segment and the power terminal, ensuring the efficiency and stability of the current transmission path.

[0053] In an exemplary embodiment, the conductor segment includes a first side edge and a second side edge of equal length, the measuring points include a first measuring point arranged on the first side edge and a second measuring point arranged on the second side edge, the first measuring point is connected to the first detection line, the second measuring point is connected to the second detection line, and the first detection line and the second detection line are connected to the control component in the form of a differential pair; the first detection line and the second detection line are arranged on different layers of the board card.

[0054] In this embodiment, the conductor segment includes a first side edge and a second side edge of equal length. The measuring points include a first measuring point arranged on the first side edge and a second measuring point arranged on the second side edge. This symmetrical measuring point arrangement helps to accurately obtain the voltage drop at both ends of the conductor segment, providing a reliable data basis for current calculation. The first measuring point is connected to the first detection line, and the second measuring point is connected to the second detection line. The first detection line and the second detection line are connected to the control component in the form of a differential pair. The differential pair connection method has good anti-interference performance, which can effectively improve the accuracy and stability of the detection signal. In high-speed signal transmission and precise measurement, differential signals can cancel the influence of external electromagnetic interference, reduce signal crosstalk, and ensure that the detected voltage drop signal truly reflects the current change in the conductor segment.

[0055] The first detection line and the second detection line are arranged on different layers of the board card with the conductor segment, which can effectively utilize the vertical space of the board card and avoid wiring conflicts between the conductor segment and the detection lines on the same layer. Especially in high-density board card design, this layered layout provides more flexibility for the arrangement of other components and lines, which helps to realize complex circuit design and compact device layout. It can be understood that a larger working current flows through the conductor segment, while the detection lines transmit weak signals for detection. The layered arrangement of the two can significantly reduce the mutual inductance effect of current changes in the conductor segment on the detection line signals, reduce noise interference, and thus improve the accuracy of current detection. In addition, the layered layout also helps to reduce mutual interference between the detection lines and ensure the transmission quality of the differential signals. In addition, during the manufacturing process, the layered layout is beneficial to the optimization of the manufacturing process of the PCB. The functional partitioning of different layers is clear, which can improve production efficiency and yield. At the same time, reducing the direct contact between the detection lines and the large-current conductor segment reduces the risk of electrical failure due to manufacturing defects or during use, and improves the overall reliability of the board card.

[0056] In an exemplary embodiment, the power supply protection circuit further comprises:

[0057] The temperature acquisition component is provided with at least one conductor segment within its temperature acquisition range, and the sampling output end of the temperature acquisition component is connected to the second detection end of the control component 3.

[0058] In this embodiment, the resistance of the conductor segment changes with temperature, so the temperature acquisition component, such as a temperature sensor, is arranged around the conductor segment to monitor the temperature of the conductor segment. The sampling output end of the temperature sensor is connected to the second detection end of the control component 3 for transmitting temperature signals. The control component 3 is responsible for receiving the output signals of the temperature sensor and correcting the impedance value of the conductor segment in real time according to these signals, thereby reducing current detection errors and improving detection accuracy.

[0059] In an exemplary embodiment, the third detection end of the control component 3 is connected to the in-place detection end of the socket, and the socket is used to install a load. The socket includes a detection point. When the load contacts the detection point in the socket, the in-place detection end of the socket outputs an in-place signal. When the load does not contact the detection point in the socket, the in-place detection end of the socket outputs an off-site signal.

[0060] The control component 3 is further configured to control the switch module 21 to be turned on or turned off according to the in-place signal or off-site signal output by the in-place detection end.

[0061] In the embodiment, the slot is used to install the load, and contains a detection point for detecting whether the load is correctly installed in place. Specifically, when the load contacts the detection point, an in-place signal is output; when the load does not contact the detection point, an off-site signal is output. The control component 3 receives the in-place detection signal from the slot and controls the on or off of the switch module 21 (such as a power MOS tube) according to the signal. The switch module 21 is used to control the opening and closing of the power supply branch, so as to realize the hot plug of the load.

[0062] In the hot plug process, when the slot is inserted into the load, the voltage at the back end of the switch module 21 and the power supply interface of the load is 0V, and the voltage difference between the two is 0V. The load can be inserted with zero electrical pressure. When the load contacts the detection point in the slot, it is determined that the load is inserted in place. After the load is inserted in place, the control component 3 detects the in-place signal and sends a switch tube on signal. The voltage at the load end gradually reaches the power supply voltage from 0V, realizing the hot plug of the load. In this process, the capacitance at the load end will not appear instantaneous charging current, avoiding the impact current and electric spark phenomenon at the connector.

[0063] When the load needs to be pulled out, the load does not contact the detection point, the control component 3 detects the off-site signal and triggers, and sends a switch tube off signal. After the switch tube is turned off, the voltage at the back end of the switch tube circuit and the load input end gradually decreases to 0V. At this time, the load is completely pulled out, realizing the hot pull-out with zero voltage.

[0064] In the embodiment, the system power supply can be replaced without being turned off, improving the availability and maintainability of the system. By gradually changing the voltage, the instantaneous current impact is avoided, and the circuit and components are protected from damage.

[0065] In an exemplary embodiment, the first protection component 2 includes an electronic fuse. The first end of the electronic fuse is connected to the power supply output end of the power supply 1, the second end of the electronic fuse is connected to the corresponding load, the control end and the sampling end of the electronic fuse are connected to the control component 3, the electronic fuse is internally integrated with a sampling resistor and a switch tube, the first end of the sampling resistor is connected to the first end of the electronic fuse, the second end of the sampling resistor is connected to the first end of the switch tube, the second end of the switch tube is connected to the second end of the electronic fuse, the control end of the switch tube is connected to the control end of the electronic fuse, and the sampling end of the electronic fuse is configured to output the voltage signal between the two ends of the sampling resistor.

[0066] In the embodiment, a single-chip integrated electronic fuse can be selected, in which a sampling resistor and a switch tube are integrated, that is, the sampling resistor and the switch tube in the embodiment are integrated, the sampling end of the electronic fuse outputs a voltage signal across the sampling resistor, which is used to monitor the current passing through the electronic fuse, and when the current exceeds a preset value, the control component 3 triggers the switch tube to be turned off through the control end, so as to cut off the current and protect the circuit. The embodiment can reduce the use of precision resistors and controllers and reduce the area of devices on the card.

[0067] In an example embodiment, the power supply protection circuit further comprises:

[0068] The second protection component is connected with the power supply 1 and the control component 3, and is configured to be turned off or turned on in response to the protection signal to adjust the state of the power supply 1, the state being a power supply output state or a non-power supply output state.

[0069] The control component 3 is further configured to output the protection signal according to the abnormal protection condition met by the power supply parameter.

[0070] In the embodiment, the power supply 1 of the server can be a redundant architecture, that is, a plurality of power supplies 1 include N main power supplies and a corresponding number of backup power supplies, such as an N+1 architecture including N main power supplies and one backup power supply, when any main power supply fails, the backup power supply can immediately take over to ensure the system continues to run. In the N+N redundant architecture, the same number of main power supplies and backup power supplies are included. All power supplies can participate in power supply, improving the total capacity and reliability of power supply. In the embodiment, a second protection component is further provided at one end of the primary winding of the transformer of each main power supply and each backup power supply. By controlling the turn-on or turn-off of the second protection component, the power supply output of the main power supply and the backup power supply is controlled. When the second protection component is turned on, the power supply 1 connected with the second protection component is in a power supply output state, and when the second protection component is turned off, the power supply 1 connected with the second protection component is in a non-power supply output state. The control component 3 is connected with the second protection component, and according to the abnormal protection condition met by the power supply parameter in the power supply loop, the control component 3 controls the second protection component on the corresponding power supply 1 to perform a corresponding action, further improving the reliability of power supply.

[0071] In an example embodiment, the number of power supplies 1 is multiple, and the power supply protection circuit further comprises:

[0072] A plurality of indication components are respectively connected with the plurality of power supplies 1, and the indication component is configured to indicate the state of the power supply 1 as a power supply output state or a non-power supply output state.

[0073] In the embodiment, the indication assembly can provide intuitive visual feedback, enabling the operator to quickly understand the working state of each power supply 1. When the system fails, the indication assembly can help quickly locate the problem power supply, thereby speeding up the fault diagnosis and repair process.

[0074] In a second aspect, referring to Figure 6 The application further provides a power supply protection method applied to the power supply protection circuit as described in any one of the above embodiments, and the power supply protection method comprises:

[0075] S101: acquiring a power supply parameter of the power supply detected by the first protection assembly arranged in the power supply circuit of the power supply;

[0076] S102: when the power supply parameter meets the abnormal protection condition, controlling the first protection assembly to be disconnected to disconnect the power supply of the corresponding load in the power supply circuit.

[0077] For the power supply protection method provided by the application, please refer to the above embodiments, and the application will not be repeated here.

[0078] The power supply protection method provided by the application has the same beneficial effects as the above power supply protection circuit.

[0079] In a third aspect, the application further provides a server comprising at least one power supply and a load, and a power supply protection circuit as described in any one of the above embodiments connected with the power supply and the load.

[0080] The power supply protection circuit comprises:

[0081] The first protection assembly is arranged in the power supply circuit of the power supply and is configured to detect the power supply parameter of the power supply and disconnect the power supply of the corresponding load in the power supply circuit in response to the control signal;

[0082] The control assembly is connected with the first protection assembly and is configured to generate the control signal when the power supply parameter meets the abnormal protection condition.

[0083] In an exemplary embodiment, the first protection assembly comprises:

[0084] The switch module is connected in series in the power supply circuit of the power supply, the control end of the switch module is connected with the control end of the control assembly, and the switch module is configured to disconnect the power supply of the corresponding load in the power supply circuit in response to the control signal;

[0085] The detection module is connected with the power supply output end of the power supply and the first detection end of the control assembly, and the detection module is configured to detect the power supply parameter of the power supply output end of the power supply.

[0086] In an example embodiment, the power supply includes a transformer, and the switch module is arranged between a secondary winding of the transformer and a corresponding load.

[0087] In an example embodiment, the switch module includes a plurality of parallel switch tubes, and control ends of the plurality of switch tubes are connected to the control end of the control component.

[0088] In an example embodiment, the detection module includes a sampling resistor, a first end of the sampling resistor is connected to the power supply output end of the power supply and the control component, and a second end of the sampling resistor is connected to the switch module and the control component.

[0089] In an example embodiment, the detection module includes a conductor segment connecting a power input terminal and a power output terminal on the board card, and a measurement point arranged at both ends of the conductor segment, the measurement point is connected to the control component, the power input terminal is connected to the power supply output end of the power supply, and the power output terminal is connected to a corresponding load on the board card.

[0090] In an example embodiment, the conductor segment is composed of at least one conductive layer on the board card.

[0091] In an example embodiment, the conductor segment is a multi-layer structure composed of a plurality of interconnected conductive layers, and a plurality of interconnected vias are arranged on the power input terminal and the power output terminal.

[0092] In an example embodiment, the power supply protection circuit further includes:

[0093] The temperature acquisition component is arranged with at least one conductor segment in the temperature acquisition range of the temperature acquisition component, and a sampling output end of the temperature acquisition component is connected to the second detection end of the control component.

[0094] In an example embodiment, the third detection end of the control component is connected to the in-place detection end of the slot, the slot is used for installing a load, and the slot includes a detection point, when the load contacts the detection point in the slot, the in-place detection end of the slot outputs an in-place signal, and when the load does not contact the detection point in the slot, the in-place detection end of the slot outputs an off-site signal.

[0095] The control component is further configured to control the switch module to be turned on or turned off according to the in-place signal or the off-site signal output by the in-place detection end.

[0096] In an example embodiment, the first protection component comprises an electronic fuse, a first end of the electronic fuse is connected to the power output end of the power supply, a second end of the electronic fuse is connected to the corresponding load, a control end and a sampling end of the electronic fuse are connected to the control component, the electronic fuse is internally integrated with a sampling resistor and a switch tube, a first end of the sampling resistor is connected to the first end of the electronic fuse, a second end of the sampling resistor is connected to a first end of the switch tube, a second end of the switch tube is connected to the second end of the electronic fuse, a control end of the switch tube is connected to the control end of the electronic fuse, and the sampling end of the electronic fuse is configured to output a voltage signal at both ends of the sampling resistor.

[0097] In an example embodiment, the power supply protection circuit further comprises:

[0098] The second protection component is connected to the power supply and the control component, and is configured to be turned off or turned on in response to the protection signal to adjust the state of the power supply, the state being a power output state or a non-power output state.

[0099] The control component is further configured to output the protection signal according to the abnormal protection condition met by the power supply parameter.

[0100] In an example embodiment, the number of power supplies is multiple, and the power supply protection circuit further comprises:

[0101] The plurality of indication components are respectively connected to the plurality of power supplies, and are configured to indicate the state of the power supply, the state being a power output state or a non-power output state.

[0102] For the server provided by the present application, please refer to the above-mentioned embodiments, which will not be repeated here.

[0103] The server provided by the present application has the same beneficial effects as the above-mentioned power supply protection circuit.

[0104] The skilled person can further realize that the units and algorithm steps of the examples described in combination with the embodiments disclosed herein can be realized by electronic hardware, computer software or a combination of both. In order to clearly illustrate the interchangeability of hardware and software, the components and steps of the examples have been described in general terms in the above description. Whether the functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. The skilled person can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of the present application.

[0105] The power supply protection circuit, method and server provided by the present application are described in detail above. The principles and implementation manners of the present application are described by applying specific examples in this paper, and the above description of the examples is only used to help understand the method of the present application and its core idea. It should be pointed out that, for ordinary skilled persons in the technical field, some improvements and modifications can be made to the present application without departing from the principles of 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 protection circuit, characterized by, include: The first protection component is located in the power supply circuit of the power supply and is configured to detect the power supply parameters of the power supply and disconnect the power supply to the corresponding load in the power supply circuit in response to a control signal. A control component, connected to the first protection component, is configured to generate the control signal when the power supply parameters meet the abnormal protection conditions. The first protection component includes: A switching module is connected in series in the power supply circuit of the power supply. The control terminal of the switching module is connected to the control terminal of the control component. The switching module is configured to disconnect the power supply to the corresponding load in the power supply circuit in response to a control signal. A detection module is connected to the power supply output terminal of the power supply and the first detection terminal of the control component. The detection module is configured to detect the power supply parameters of the power supply output terminal of the power supply. The detection module includes a conductor segment on a board that connects a power input terminal and a power output terminal, a first measuring point on a first side of the conductor segment, and a second measuring point on a second side of the conductor segment. The first measuring point is connected to a first detection line, and the second measuring point is connected to a second detection line. The first and second detection lines are connected to the control component in a differential pair configuration. The power input terminal is connected to the power output terminal of the power supply, and the power output terminal is connected to the corresponding load on the board. The first and second sides are of equal length, and the first and second detection lines are disposed on different layers of the board from the conductor segment to reduce the mutual inductance influence of current changes in the conductor segment on the detection line signal. The conductor segment is a multilayer structure composed of multiple interconnected conductive layers. Both the power input terminal and the power output terminal are provided with multiple interconnected vias. The number of interconnected vias is determined according to the current requirement to ensure uniform current distribution. The size of the conductor segment is determined based on the power path loss requirements and power path detection accuracy of the target electronic device.

2. The power supply protection circuit of claim 1, wherein, The power supply includes a transformer, and the switching module is located between the secondary winding of the transformer and the corresponding load.

3. The power supply protection circuit of claim 2, wherein, The switching module includes multiple switching transistors connected in parallel, and the control terminals of the multiple switching transistors are connected to the control terminal of the control component.

4. The power supply protection circuit of claim 1, wherein, The power supply protection circuit also includes: A temperature acquisition component, wherein at least one conductor segment is provided within the temperature acquisition range of the temperature acquisition component, and the sampling output terminal of the temperature acquisition component is connected to the second detection terminal of the control component.

5. The power supply protection circuit of claim 1, wherein, The third detection end of the control component is connected to the in-situ detection end of the slot. The slot is used to install the load and includes a detection point. When the load contacts the detection point in the slot, the in-situ detection end of the slot outputs an in-situ signal. When the load does not contact the detection point in the slot, the in-situ detection end of the slot outputs a de-position signal. The control component is further configured to control the switch module to turn on or off based on the in-situ signal or the out-of-situ signal output by the in-situ detection terminal.

6. The power supply protection circuit of claim 1, wherein, The first protection component includes an electronic fuse, a first end of the electronic fuse is connected to a power output end of the power supply, a second end of the electronic fuse is connected to a corresponding load, a control end and a sampling end of the electronic fuse are connected to the control component, the electronic fuse is internally integrated with a sampling resistor and a switch tube, a first end of the sampling resistor is connected to the first end of the electronic fuse, a second end of the sampling resistor is connected to a first end of the switch tube, a second end of the switch tube is connected to the second end of the electronic fuse, a control end of the switch tube is connected to the control end of the electronic fuse, and the sampling end of the electronic fuse is configured to output a voltage signal between the sampling resistor.

7. The power supply protection circuit according to any one of claims 1 to 6, characterized in that, The power supply protection circuit further includes: A second protection component connected to the power supply and the control component, the second protection component is configured to be turned off or turned on in response to a protection signal to adjust a state of the power supply, the state being a power output state or a non-power output state; The control component is further configured to output the protection signal according to an abnormal protection condition met by the power supply parameter.

8. The power supply protection circuit of claim 7, wherein, The number of power supplies is multiple, and the power supply protection circuit further includes: A plurality of indication components respectively connected to the plurality of power supplies, the indication components are configured to indicate the state of the power supply as a power output state or a non-power output state.

9. A power supply protection method characterized by, The power supply protection method is applied to the power supply protection circuit according to any one of claims 1-8, and the power supply protection method includes: Obtaining a power supply parameter of the power supply detected by a first protection component arranged in a power supply circuit of the power supply; When the power supply parameter meets an abnormal protection condition, controlling the first protection component to be turned off to disconnect the power supply of the corresponding load in the power supply circuit.

10. A server, characterized by The power supply protection circuit includes at least one power supply and a load, and is connected to the power supply and the load.

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