Power supply protection circuit and method and server

Abstract

The invention discloses a power supply protection circuit and method and a server, and relates to the technical field of servers, and the method comprises the steps: setting a first protection assembly in a power supply loop of a power supply, and enabling the first protection assembly to detect power supply parameters of a power supply output end of the power supply, when the control assembly judges that the power supply parameters detected by the first protection assembly meet the abnormal protection conditions, the control assembly controls the first protection assembly to timely execute the protection action to disconnect the power supply loop where the first protection assembly is located, thereby solving the problem of rear-end load damage caused by untimely abnormal protection of the power supply loop. The technical effect of improving the operation stability and safety of the server is achieved.

Description

Technical Field

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

[0002] Servers are developing rapidly towards high computing power and high integration. To meet computing power requirements, the input power of a single cabinet has been increased from the traditional kilowatt level to tens of kilowatts, and the current and voltage fluctuation range of the power supply system has expanded. In this scenario, abnormal operating conditions of the power supply circuit (such as instantaneous overcurrent and voltage surge / drop) occur frequently. If protection is not timely, it is very easy to cause damage to the back-end 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 of the invention

[0004] The present invention provides a power supply protection circuit, method and server, so as to at least solve the problem of damage to rear-end loads caused by untimely protection of power supply circuit abnormality in the related art.

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

[0006] A first protection component is provided in a power supply circuit of the power supply, and is configured to detect power supply parameters of the power supply, and 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 the abnormal protection condition.

[0008] The present invention further provides a power supply protection method, which is applied to the power supply protection circuit as described in any one of the above, and the power supply protection method comprises:

[0009] Acquiring a power supply parameter of the power supply detected by a first protection component arranged in a 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 invention 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 items, connected to the power supply and the load.

[0012] Through the present invention, since the first protection component is set in the power supply circuit of the power supply, the first protection component detects the power supply parameters of the power supply output end of the power supply. When the control component determines that the power supply parameters detected by the first protection component meet the abnormal protection conditions, the first protection component is controlled to execute the protection action in time to disconnect the power supply circuit where it is located, thereby solving the problem of damage to the back-end load caused by untimely protection and achieving the effect of ensuring the safe and reliable operation of the server. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0014] Figure 1 A schematic diagram of the structure of a first power supply protection circuit provided by an embodiment of the present invention;

[0015] Figure 2 A schematic diagram of the structure of a second power supply protection circuit provided by an embodiment of the present invention;

[0016] Figure 3 A schematic diagram of the structure of a third power supply protection circuit provided by an embodiment of the present invention;

[0017] Figure 4 A schematic diagram of the structure of a fourth power supply protection circuit provided by an embodiment of the present invention;

[0018] Figure 5 A schematic diagram of the structure of a detection module provided by an embodiment of the present invention;

[0019] Figure 6 A flowchart of the steps of a power supply protection method provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

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

[0022] In order to enable those skilled in the art to better understand the scheme of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0023] First, please refer to Figure 1 , Figure 1 A schematic diagram of a power supply protection circuit provided by the present invention, the power supply protection circuit comprising:

[0024] The first protection component 2 is provided in the power supply circuit of the power supply 1 and is configured to detect the power supply parameters of the power supply 1 and 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 to the first protection component 2 and is configured to generate a control signal when the power supply parameters meet the abnormal protection conditions.

[0026] In this embodiment, the server includes a power supply 1. When there is only one power supply 1, 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, and one end of the primary winding is connected to the live wire L. The number of power supplies 1 can also be multiple, refer to Figure 2 The common end of the first ends of the secondary windings of the transformers of multiple power supplies 1 connected to each other serves 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 circuit are connected to each other, and each branch corresponds to the voltage requirement of a specific load (for example, 12V, 5V, etc.). Voltage adaptation can be achieved by adding a 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 finally back to the power supply end. The main function of the power supply circuit is to transfer electrical energy from the power supply to the load and ensure that the current can flow safely and efficiently. It can be understood that a power supply circuit can include multiple power supply branches. The power supply branch refers to a circuit part that branches out from a certain point in the power supply circuit (usually the power supply output end) and is directly connected to a specific load. The first protection component 2 in this embodiment can be set 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 there can be multiple first protection components 2, which are set one by one on multiple power supply branches in the power supply circuit.

[0028] The first protection component 2 is connected to the control component 3, and transmits the detected power supply parameters to the control component 3. The control component 3 compares the power supply parameters with the corresponding preset thresholds. If the power supply parameters reach the corresponding preset thresholds, 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 faulty branch and avoiding global power outages.

[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, and 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 , and 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 a switch module 21 and a 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 can be connected in series in the power supply branch corresponding to the power supply circuit. Specifically, 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 to the power supply output end of the power supply source 1, and the second end of the detection module 22 is connected to the first detection end of the control component 3, for real-time detection of the power supply parameters (such as voltage, current, temperature, etc.) on the power supply branch where it is located, and the power supply parameters are fed back to the control component 3, which can be transmitted to the control component 3 through analog signals 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 determines whether the power supply parameters meet the abnormal protection conditions. If so, a control signal is sent to the switch module 21 on the power supply branch where the detection module 22 is located. After receiving the control signal, the switch module 21 is disconnected, thereby cutting off the power supply branch and stopping the power supply to the load on the power supply branch, while other branches maintain normal operation.

[0033] The switch module 21 can specifically select intelligent relays, MOSFET (Metal-Oxide-SemiconductorField-Effect Transistor) or solid-state relays (SSR, Solid-State Relay), etc., which have 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 mutual interference between the monitoring and execution functions, ensuring that only the faulty branch is cut off and the non-faulty part is not affected. The modular design allows the detection or switch components to be replaced separately, reducing maintenance costs. When adding a new branch, only the module combination needs to be copied without the need to reconstruct the entire system. The detection signal is separated from the control signal (such as using photoelectric isolation technology) to reduce the interference of electromagnetic noise in the power supply circuit on the control logic.

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

[0035] It can be understood that in high-power scenarios (such as server power branches), large currents may cause a single switch tube to overheat or burn out. The switch module 21 in this embodiment can be built with multiple parallel switch tubes. The parallel design reduces the pressure on a single tube by equalizing the current, and the power loss is distributed to multiple devices, reducing the temperature rise of a single tube and reducing the pressure on the heat dissipation design. If a switch tube fails due to aging, overcurrent or short circuit, other parallel switch tubes can still maintain the circuit on-off function to avoid 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), multi-tube collaboration can complete the action faster.

[0036] In this embodiment, multiple parallel switch tubes can select switch tubes with consistent parameters to ensure that all switches operate synchronously to achieve high current protection.

[0037] In an exemplary embodiment, the detection module 22 includes a sampling resistor, a first end of the sampling resistor is connected to the power supply 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 this embodiment, the sampling resistor can specifically be a precision resistor, one end of the sampling resistor is connected to the power supply 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 tiny voltage signal at both ends of the sampling resistor through a differential amplifier or a dedicated current detection chip. After amplification and filtering, the signal is converted into a digital quantity by the 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 exceeds the limit.

[0040] In this 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 the parasitic impedance.

[0041] In an exemplary embodiment, referring to Figure 5 The detection module 22 includes a conductor segment connected to the power input terminal and the power output terminal on the board, and measurement points (such as Figure 5 The bridge head measuring point and the bridge tail measuring point in the figure), the measuring point is connected to the control component 3, the power input terminal is connected to the power supply output end of the power supply 1, and the power output terminal is connected to the corresponding load on the board.

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

[0043] Among them, the board with reserved conductor segments is the board with load and switch module 21. By reserving conductor segments with preset impedance in the board, the area occupied by discrete devices on the board can be reduced, which is suitable for high-density board design (such as server power board). The conductor segments are integrally formed with the board to avoid the problem of desoldering or poor contact of discrete resistors due to vibration and temperature change. The parasitic parameters (inductance, capacitance) are controllable, which is conducive to signal integrity in high-frequency scenarios. Because no additional sampling resistor is required, and the detection module 22 can be flexibly arranged on the board to adapt to different circuit design and layout requirements.

[0044] In an exemplary embodiment, the conductor segment is formed by at least one conductive layer on the board.

[0045] In this embodiment, the conductor segment can be composed of a conductive layer on the board or a plurality of 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 that the current is efficiently transmitted in the conductor segment and reduce energy loss. The conductor segment can also be regarded as a current transmission channel, and the spacing between the two sides of the channel is the width W. The channel can preferably be a parallel channel. Specifically, a rectangular conductor segment can be selected, and the width of the rectangular conductor segment is consistent along the path to ensure that the impedance parameters of the conductor segment are standardized.

[0046] In an exemplary embodiment, the conductor segment is a multi-layer structure composed of a plurality of interconnected conductive layers, and a plurality of interconnected vias are provided on both 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 vias, it is possible to ensure that the current is evenly distributed between the layers, and to avoid overheating or damage caused by excessive current in a certain layer. 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, help reduce interference and crosstalk in signal transmission, and improve signal integrity.

[0048] The number of interconnect vias is usually determined by the current requirements of the circuit. For example, if the circuit needs to pass a current of 30A, the number of vias is usually designed to be 30 or more to ensure that the current can be evenly distributed. The number of interconnect vias can also be reduced appropriately, but it is necessary to ensure that it will not affect the balanced distribution of current and the performance of the circuit. The arrangement of vias can be dense or scattered, depending on the design requirements of the circuit and the process capabilities of the PCB board factory.

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

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

[0051] The conductor segments and power terminals are arranged in layers, that is, the conductive layers constituting the conductor segments and the power input terminals and power output terminals are arranged on different layers of the board. In this case, the conductive layers constituting the conductor segments are connected to the power input terminals and power output terminals through vias. As a common connection method in PCB board design, vias can achieve electrical connections between different layers, ensuring that current can be smoothly transmitted from the power input terminal to the conductor segments, and then from the conductor segments to the power output terminals, and then connected to the corresponding loads. This layered layout method is conducive to optimizing the space utilization of the board, especially in high-density board design, which can effectively alleviate the wiring pressure on the same layer and provide more space for the layout of other components and lines.

[0052] The conductor segment and the power terminal are laid out on the same layer, and the conductive layer constituting the conductor segment is arranged on the same layer as the power input terminal and the power output terminal. At this time, the power input terminal and the power output terminal can specifically be the power input copper foil and the power output copper foil on the board. The copper foil of the conductor segment and the power input / output copper foil can be arranged on the same layer or on different layers. When the copper foil of the conductor segment is multi-layer, one layer can be arranged on the same layer as the power input / output copper foil. This same-layer layout method can simplify the manufacturing process of the board in some cases, reduce the number of vias used, and reduce potential reliability problems and manufacturing costs caused by vias. At the same time, the same-layer layout is also convenient for wiring optimization and debugging in the design stage, and can more intuitively observe and adjust 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 and a second side of equal length, the measuring point includes a first measuring point arranged on the first side and a second measuring point arranged on the second side, the first side point is connected to a first detection line, the second measuring point is connected to a second detection line, the first detection line and the second detection line are connected to a control component in the form of a differential pair; the first detection line and the second detection line are arranged on different layers on the board with the conductor segment.

[0054] In this embodiment, the conductor segment includes a first side and a second side of equal length. The measuring point includes a first measuring point provided on the first side and a second measuring point provided on the second side. This symmetrical measuring point layout helps to accurately obtain the voltage drop across the conductor segment and provide 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 and can effectively improve the accuracy and stability of the detection signal. In high-speed signal transmission and precision measurement, the differential signal can offset the influence of external electromagnetic interference, while reducing crosstalk between signals, ensuring that the detected voltage drop signal truly reflects the current changes in the conductor segment.

[0055] The first detection line and the second detection line are arranged on different layers of the board with the conductor segment, which can effectively utilize the vertical space of the board and avoid wiring conflicts between the conductor segment and the detection line on the same layer. Especially in high-density board design, this layered layout provides more flexibility for the arrangement of other components and lines, which helps to achieve complex circuit design and compact device layout. It can be understood that a large working current flows through the conductor segment, and the detection line transmits a weak signal for detection. The layered arrangement of the two can significantly reduce the mutual inductance effect of the current change in the conductor segment on the detection line signal, 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 signal. In addition, during the manufacturing process, the layered layout is conducive to optimizing the manufacturing process of the PCB. The functional divisions of different layers are clear, which can improve production efficiency and yield. At the same time, reducing the direct contact between the detection line and the high-current conductor segment reduces the risk of electrical failures due to manufacturing defects or during use, and improves the overall reliability of the board.

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

[0057] A temperature acquisition component, wherein at least one conductor segment is provided within 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 3 .

[0058] In this embodiment, the resistance of the conductor segment changes with temperature. Therefore, in this embodiment, a 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 the temperature signal. The control component 3 is responsible for receiving the output signal of the temperature sensor and correcting the impedance value of the conductor segment in real time according to these signals, thereby reducing the current detection error and improving the detection accuracy.

[0059] In an exemplary embodiment, the third detection end of the control component 3 is connected to the in-position detection end of the slot, the slot is used to install the load, the slot includes a detection point, when the load contacts the detection point in the slot, the in-position detection end of the slot outputs an in-position signal, when the load does not contact the detection point in the slot, the in-position detection end of the slot outputs an out-of-position signal;

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

[0061] In this embodiment, the slot is used to install the load and includes 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 not in contact, an out-of-place signal is output. The control component 3 receives the in-place detection signal from the slot and controls the conduction or disconnection of the switch module 21 (such as a power MOS tube) according to these signals. The switch module 21 is used to control the opening and closing of the power supply branch to realize hot plugging of the load.

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

[0063] When the load needs to be unplugged, the load and the detection point are not in contact, the control component 3 detects the triggering of the out-of-position signal, and sends a switch tube shutdown signal. After the switch tube is turned off, the voltage of the back-end circuit of the switch tube and the input end of the load gradually drops to 0V. At this time, the load is completely unplugged, and hot unplugging with zero voltage is achieved.

[0064] In this embodiment, it is allowed to replace or upgrade faulty components without shutting down the system power supply, thereby improving the availability and maintainability of the system. By controlling the gradual change of voltage, instantaneous current shocks are avoided, protecting circuits and components from damage.

[0065] In an exemplary embodiment, the first protection component 2 includes an electronic fuse, a first end of the electronic fuse is connected to the power supply output end of the power supply 1, 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 both connected to the control component 3, a sampling resistor and a switch tube are integrated inside the electronic fuse, 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 the 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 across the sampling resistor.

[0066] In this embodiment, a monolithic 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 this embodiment are of integrated design, and 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. When the current exceeds a preset value, the control component 3 triggers the switch tube to disconnect through the control end, thereby cutting off the current and protecting the circuit. This embodiment can reduce the use of precision resistors and controllers, and reduce the area occupied by devices on the board.

[0067] In an exemplary embodiment, the power supply protection circuit further includes:

[0068] A second protection component is connected to the power supply 1 and the control component 3, and the second protection component is configured to disconnect or conduct in response to the protection signal to adjust the state of the power supply 1, which is a power supply output state or a non-power supply output state;

[0069] The control component 3 is also configured to output a protection signal according to the abnormal protection conditions satisfied by the power supply parameters.

[0070] In this embodiment, the power supply 1 of the server can be a redundant architecture, that is, multiple power supplies 1 include N main power supplies and a corresponding number of backup power supplies, such as N+1 architecture, including N main power supplies and one backup power supply. When any main power supply fails, the backup power supply can take over immediately to ensure that the system continues to operate. 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 the power supply, which improves the total capacity and reliability of the power supply. In this embodiment, a second protection component is also provided at one end of the primary winding of the transformer of each main power supply and each backup power supply. By controlling the conduction or disconnection 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 to the second protection component is in the power supply output state. When the second protection component is disconnected, the power supply 1 connected to the second protection component is in the non-power supply output state. The control component 3 is connected to the second protection component, and according to the abnormal protection conditions satisfied by the power supply parameters in the power supply circuit, the second protection component on the corresponding power supply 1 is controlled to perform the corresponding action, thereby further improving the power supply reliability.

[0071] In an exemplary embodiment, the number of power supply sources 1 is multiple, and the power supply protection circuit further includes:

[0072] The plurality of indicating components are respectively connected to the plurality of power supplies 1 correspondingly, and the indicating components are configured to indicate whether the state of the power supply 1 is a power output state or a non-power output state.

[0073] In this embodiment, the indicator component can provide intuitive visual feedback, so that the operator can quickly understand the working status of each power supply 1. When a system failure occurs, the indicator component can help quickly locate the problem power supply, thereby accelerating the fault diagnosis and repair process.

[0074] Second, please refer to Figure 6 The present invention further provides a power supply protection method, which is applied to the power supply protection circuit described in any one of the above embodiments, and the power supply protection method includes:

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

[0076] S102: 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.

[0077] For an introduction to a power supply protection method provided by the present invention, please refer to the above-mentioned embodiment, and the present invention will not be described in detail here.

[0078] A power supply protection method provided by the present invention has the same beneficial effects as the above-mentioned power supply protection circuit.

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

[0080] The power supply protection circuit comprises:

[0081] A first protection component is provided in a power supply circuit of the power supply, and is configured to detect power supply parameters of the power supply, and disconnect the power supply of a corresponding load in the power supply circuit in response to a control signal;

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

[0083] In an exemplary embodiment, the first protection component includes:

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

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

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

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

[0088] In an exemplary 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 exemplary embodiment, the detection module includes a conductor segment on the board that connects a power input terminal and a power output terminal, and measuring points arranged at both ends of the conductor segment, the measuring points are connected to the control component, the power input terminal is connected to the power output end of the power supply, and the power output terminal is connected to the corresponding load on the board.

[0090] In an exemplary embodiment, the conductor segment is formed by at least one conductive layer on the board.

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

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

[0093] A temperature acquisition component is provided with at least one conductor segment within 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 exemplary embodiment, the third detection end of the control component is connected to the in-position detection end of the slot, the slot is used to install the load, the slot includes a detection point, when the load contacts the detection point in the slot, the in-position detection end of the slot outputs an in-position signal, when the load does not contact the detection point in the slot, the in-position detection end of the slot outputs an out-of-position signal;

[0095] The control component is also configured to control the switch module to be turned on or off according to the in-position signal or the out-of-position signal output by the in-position detection terminal.

[0096] In an exemplary embodiment, the first protection component includes an electronic fuse, a first end of the electronic fuse is connected to the power supply 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 both connected to the control component, a sampling resistor and a switching tube are integrated inside the electronic fuse, 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 the first end of the switching tube, a second end of the switching tube is connected to the second end of the electronic fuse, a control end of the switching 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 across the sampling resistor.

[0097] In an exemplary embodiment, the power supply protection circuit further includes:

[0098] A second protection component is connected to the power supply and the control component, and the second protection component is configured to disconnect or conduct in response to the protection signal to adjust the state of the power supply, the state being a power supply output state or a non-power supply output state;

[0099] The control component is also configured to output a protection signal according to abnormal protection conditions satisfied by the power supply parameters.

[0100] In an exemplary embodiment, the number of power supply sources is multiple, and the power supply protection circuit further includes:

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

[0102] For an introduction to a server provided by the present invention, please refer to the above embodiment, and the present invention will not be described in detail here.

[0103] A server provided by the present invention has the same beneficial effects as the above power supply protection circuit.

[0104] Professionals may further appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, computer software, or a combination of the two. In order to clearly illustrate the interchangeability of hardware and software, the composition and steps of each example have been generally described in the above description according to function. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professionals and technicians may use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of the present invention.

[0105] The above is a detailed introduction to a power supply protection circuit, method and server provided by the present invention. This article uses specific examples to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the method of the present invention and its core idea. It should be pointed out that for ordinary technicians in this technical field, without departing from the principles of the present invention, several improvements and modifications can be made to the present invention, and these improvements and modifications also fall within the scope of protection of the claims of the present invention.

Claims

1. A power supply protection circuit, characterized in that: include: A first protection component is provided in a power supply circuit of the power supply, and is configured to detect power supply parameters of the power supply, and disconnect the power supply of a corresponding load in the power supply circuit in response to a control signal; A control component is connected to the first protection component and is configured to generate the control signal when the power supply parameter meets the abnormal protection condition.

2. The power supply protection circuit according to claim 1, characterized in that: The first protection component comprises: A switch module is connected in series in a power supply circuit of the power supply, a control end of the switch module is connected to a control end of the control component, and the switch module is configured to disconnect the power supply of a corresponding load in the power supply circuit in response to a control signal; A detection module is connected to the power supply output end of the power supply and the first detection end of the control component, and the detection module is configured to detect the power supply parameters of the power supply output end of the power supply.

3. The power supply protection circuit according to claim 2, characterized in that: The power supply includes a transformer, and the switch module is arranged between the secondary winding of the transformer and the corresponding load.

4. The power supply protection circuit according to claim 3, characterized in that: The switch module includes a plurality of switch tubes connected in parallel, and control ends of the plurality of switch tubes are connected to the control end of the control component.

5. The power supply protection circuit according to claim 2, characterized in that: The detection module comprises 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.

6. The power supply protection circuit according to claim 2, characterized in that: The detection module includes a conductor segment connected to a power input terminal and a power output terminal on the board, and measuring points arranged at both ends of the conductor segment, the measuring points are connected to the control component, the power input terminal is connected to the power output end of the power supply, and the power output terminal is connected to the corresponding load on the board.

7. The power supply protection circuit according to claim 6, characterized in that: The conductor segment is formed by at least one conductive layer on the board.

8. The power supply protection circuit according to claim 7, characterized in that: The conductor segment is a multi-layer structure composed of a plurality of interconnected conductive layers, and a plurality of interconnected vias are provided on the power input terminal and the power output terminal.

9. The power supply protection circuit according to claim 6, characterized in that: 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 a sampling output end of the temperature acquisition component is connected to the second detection end of the control component.

10. The power supply protection circuit according to claim 2, characterized in that: The third detection end of the control component is connected to the in-position detection end of the slot, the slot is used to install the load, the slot includes a detection point, when the load contacts the detection point in the slot, the in-position detection end of the slot outputs an in-position signal, when the load does not contact the detection point in the slot, the in-position detection end of the slot outputs an out-of-position signal; The control component is further configured to control the switch module to be turned on or off according to the in-position signal or the out-of-position signal output by the in-position detection terminal.

11. The power supply protection circuit according to claim 1, characterized in that: The first protection component includes an electronic fuse, a first end of the electronic fuse is connected to the power supply 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 both connected to the control component, a sampling resistor and a switch tube are integrated inside the electronic fuse, 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 the 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 across the sampling resistor.

12. The power supply protection circuit according to any one of claims 1 to 11, characterized in that: The power supply protection circuit also includes: A second protection component is connected to the power supply and the control component, and the second protection component is configured to disconnect or conduct in response to a protection signal to adjust the state of the power supply, wherein the state is a power supply output state or a non-power supply output state; The control component is also configured to output the protection signal according to the abnormal protection condition satisfied by the power supply parameter.

13. The power supply protection circuit according to claim 12, characterized in that: The number of the power supply is multiple, and the power supply protection circuit further includes: A plurality of indicating components are respectively connected to the plurality of power supplies, and the indicating components are configured to indicate whether the state of the power supply is a power output state or a non-power output state.

14. A power supply protection method, characterized in that: Applied to the power supply protection circuit according to any one of claims 1 to 13, the power supply protection method comprises: Acquiring 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 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.

15. A server, characterized in that: It comprises at least one power supply and a load, and a power supply protection circuit according to any one of claims 1 to 13, connected to the power supply and the load.

Images