A centralized power supply server node supports a plugging system of quantized controllable hot plugging

Abstract

The application discloses a plug system with centralized power supply server node supporting quantitative controllable hot plug, and relates to the technical field of servers. The plug system comprises a power supply copper bar and a plug part. The plug part comprises a travel switch, a guide pin and a power taking clamp. The guide pin comprises a pin body, and a first elastic clamping component is arranged on the pin body. The first elastic clamping component comprises a plurality of steel balls arranged along the circumferential direction of the pin body and a spring for pressing the steel balls outward, a first mounting hole for accommodating the steel balls is arranged on the pin body, and when the steel balls are pressed against the open end of the first mounting hole under the action of the spring, part of the steel balls protrude outward from the side surface of the pin body. The position of the steel balls of the first elastic clamping component is flush with the travel switch when the travel switch is not extruded by a cabinet. The plug system enables the server node to perform a stable and controllable hot plug power-off process.

Description

Technical Field

[0001] This invention relates to the field of server technology, specifically to a hot-swappable system for centralized power supply server nodes that supports quantified and controllable hot-swapping. Background Technology

[0002] Currently, server power supply methods can be divided into two types: standard power supply unit (PSU) power supply and centralized power supply. When using PSU power supply, each server node has an independent standard PSU power supply module installed, converting 220Vac AC mains power into the 12Vdc power required by the server motherboard. In centralized power supply, a separate power supply frame exists in the rack, converting 220Vac AC mains power into 54Vdc power, and then distributing this 54Vdc power to each server node within the rack via a power supply copper busbar at the rear of the rack. The server node incorporates a centralized power supply module that draws power from the power supply copper busbar and further converts the 54Vdc power into 12Vdc power for the server motherboard.

[0003] In centralized power supply applications, server nodes are subject to hot-swapping. During a hot-swapping operation, the server node is directly inserted into the rack while it is powered on. The centralized power supply module is then powered on and supplies power to the motherboard. However, due to the server node's configuration, it will only start up and run at full power when the power button is pressed. When the server node is inserted into the rack but not powered on, the system consumes only a very low standby current, and thanks to the soft-start chip, no additional intervention is required during hot-swapping.

[0004] When a server is configured with a smart network interface card (NIC) or an OCP NIC, it often supports NCSI (meaning the server's BMC chip and service network ports share the same port). The BMC needs to operate normally even in sleep mode to monitor the server's status. Therefore, even in sleep mode, the server needs to supply power to the smart NIC and the cooling fans. If a hot-swapping operation is performed, removing the server node while it's powered on can cause a following current arc at the connection between the centralized power supply module and the power busbar due to the inductive nature of the motherboard circuitry. Therefore, the system must be notified beforehand to power off the entire machine before hot-swapping to prevent arcing at the power supply contacts and damage to the equipment.

[0005] like Figure 1 and Figure 2 As shown, the centralized power supply module is installed on the server node. As a power supply unit, it receives 54Vdc power from the power supply copper busbar on the rack and converts it into 12Vdc power for the server node to use.

[0006] The connection between the centralized power supply module and the rack power supply busbar includes a limit switch, a guide pin, and a power clip. The limit switch indicates the insertion or removal status of the server node in the rack. One end of the limit switch's signal line is grounded on the centralized power supply module, and the other end passes through the module and connects to the CPLD logic chip on the server motherboard. When the server node is inserted into the rack, the limit switch contacts the rear of the rack and closes when pressed. At this time, the limit switch is in the "on" state, and the CPLD logic chip receives a low-level signal, informing the system that the server node has been inserted. When the server node is removed, the limit switch automatically returns to the "off" state, and the CPLD logic chip receives a high-level signal, informing the system that the server node has been removed. During this process, the guide pin acts as a guide for the server node's insertion and removal in the rack, and there is a corresponding limiting hole on the rear of the rack. The power clip inserts into the power supply busbar on the rear of the rack when the server node is inserted.

[0007] In existing technology, the limit switch is relatively short, while the power clip is relatively long. Therefore, when a server node is unplugged, the limit switch disengages first, and the power clip is the last to be pulled out of the power supply busbar. During this process, the voltage change of the limit switch precedes the power-off caused by the release of the power clip. Therefore, the voltage signal from the limit switch is first transmitted to the motherboard. After the motherboard detects the unplugging state, it controls the entire machine to power down. After the entire machine is controllably powered down, the power clip on the server node disengages from the power supply busbar of the rack, and the equipment is de-energized. This method of controlling the power-down before interrupting the power supply avoids the generation of electric arcs.

[0008] like Figure 1 As shown, the height difference between the power clip and the limit switch is L. The time taken to complete the travel L during the server node unplugging process is the time window available for the system to implement a controllable power-down strategy during server node hot-plugging. In practice, the length of L is approximately 2 cm.

[0009] It is evident that the existing solution mainly relies on the time difference generated by the limit switch releasing the contact first and the clip releasing the contact after the same insertion and removal action to power down the whole machine.

[0010] However, since the insertion and extraction force between the power clip and the power supply busbar is fixed, different operators will have different insertion and extraction speeds and times due to individual differences. This results in an unstable power-down time controlled by the system. In existing technologies, the motherboard power-down logic needs to control the power-down based on the insertion and extraction time. Due to the differences in manual insertion and extraction time, the entire insertion and extraction power-down strategy becomes extremely difficult, making the whole process highly unreliable. Summary of the Invention

[0011] To address the issue of unstable power-down timing in existing hot-swappable power-down strategies for server nodes, this application provides a centralized power supply server node hot-swappable system that supports quantifiable and controllable hot-swappable operation, enabling server nodes to execute stable and controllable hot-swappable power-down processes.

[0012] The technical solution adopted by this invention to solve its technical problem is:

[0013] A centralized power supply server node supports a quantifiable and controllable hot-swappable plug-in system, including a power supply copper busbar and plug-in components. The plug-in components include a limit switch, a guide pin, and a power clip. The guide pin includes a pin body, and a first elastic snap-fit ​​component is provided on the pin body.

[0014] The first elastic snap-fit ​​assembly includes a plurality of steel balls arranged along the circumferential direction of the pin and a spring for pressing the steel balls outward. The pin is provided with a first mounting hole for accommodating the steel balls, and when the steel balls are pressed against the opening end of the first mounting hole under the action of the spring, part of the steel balls protrudes outward from the outer side of the cylindrical side of the pin.

[0015] The position of the steel ball in the first elastic snap-fit ​​component is flush with the limit switch when it is not squeezed by the cabinet;

[0016] During the process of removing a server node, the resistance increases as the steel ball passes through the pin hole. Therefore, the resistance to insertion and removal can be felt differently on the straight path of the guide pin and the path of the steel ball, thus allowing the operator to perceive the state and travel of the server node when it is inserted into the rack.

[0017] When the operator feels increased resistance when plugging or unplugging, it means that the limit switch has just disengaged. The maintenance personnel should wait a moment to allow time for the system to power down.

[0018] Furthermore, the pin body is provided with a second elastic snap-fit ​​component with the same structure as the first elastic snap-fit ​​component, and the position of the steel ball of the second elastic snap-fit ​​component is flush with the end of the power-taking clip.

[0019] During the process of unplugging the server node, the first resistance felt indicates that the limit switch has just disengaged, and the second resistance felt indicates that the server node is about to be disconnected from the power supply of the rack. In this process, the time interval between the first and second resistance felt can be controlled to meet the power-down requirements of the system.

[0020] Furthermore, a third elastic snap-fit ​​component with the same structure as the first elastic snap-fit ​​component is provided on the pin body between the first elastic snap-fit ​​component and the second elastic snap-fit ​​component.

[0021] Furthermore, the pin body is provided with a second mounting hole arranged coaxially with the pin body, and the first mounting hole is connected to the second mounting hole, and the spring is located in the second mounting hole;

[0022] The first elastic snap-fit ​​assembly further includes a clamping block located at the lower end of the spring and a fixing block located at the upper end of the spring. The fixing block is fixedly connected to the pin, and the steel ball abuts against the clamping block.

[0023] When the steel ball moves inward along the first mounting hole under the action of extrusion force, the clamping block can move upward along the second mounting hole under the extrusion action of the steel ball.

[0024] Furthermore, the first mounting hole is inclined.

[0025] Furthermore, the first elastic snap-fit ​​assembly also includes a guide plug fixedly disposed in the second mounting hole, and the outer edge of the upper side of the guide plug is flush with the lower end of the second end of the first mounting hole.

[0026] Furthermore, the upper surface of the guide plug is a spherical surface or a conical surface.

[0027] Furthermore, both the guide plug and the fixing block are fixedly connected to the pin body via threaded connections.

[0028] Furthermore, the upper end of the spring is fixedly connected to the fixing block, and the lower end of the spring is fixedly connected to the clamping block.

[0029] Furthermore, the first mounting hole includes a first hole segment and a second hole segment in sequence from the outside to the inside, and the first hole segment has a spherical structure.

[0030] The beneficial effects of this invention are:

[0031] This application provides a centralized power supply server node hot-swappable system that supports quantifiable controllable hot-swapping. The system optimizes the server node's plug-in components by replacing the straight cylindrical guide pin with a guide pin secured by steel balls. The guide pin with steel balls has several steel balls and a spring inside. Under natural, unforced conditions, the steel balls protrude from the pin body due to spring pressure. During insertion into the pin hole on the rear side of the server rack, the steel balls are first squeezed into the pin body under pressure, compressing the spring. Then, under the elastic restoring force of the spring, the steel balls pop out and return to their original position.

[0032] The straight cylindrical guide pin in the centralized power supply module plug-in / plug-out component of the centralized power supply server node has been replaced with a guide pin with a steel ball locking mechanism. By designing the number and position of the steel balls to match the lengths of the power-on clamp and limit switch, the power-down process during server node plug-in / plug-out can be precisely and quantitatively controlled, enabling the server node to execute a stable and controllable hot-swapping power-down process. This solves the problem of arcing at the power supply contacts and damaging the equipment due to the uncontrollable plug-in / plug-out process, which prevents the server node from being powered down before being removed during hot-swapping. Attached Figure Description

[0033] Figure 1 A schematic diagram of the existing server node plug-in / plug-out system;

[0034] Figure 2 A physical image of the pluggable components for an existing server node;

[0035] Figure 3 A schematic diagram of a plug-in system for a centralized power supply server node that supports quantified and controllable hot-plugging, provided in an embodiment of this application;

[0036] Figure 4 A three-dimensional structural diagram of a guide pin in a plug-in system that supports quantified and controllable hot-plugging of a centralized power supply server node, provided for an embodiment of this application;

[0037] Figure 5 Top view of the guide pin;

[0038] Figure 6 for Figure 5 AA section view in the middle;

[0039] Figure 7 for Figure 6 A magnified structural diagram of part A in the middle;

[0040] Figure 8 This is a schematic diagram of the steel ball in its retracted state.

[0041] Figure 9 This is a schematic diagram of the three-dimensional structure of the pin.

[0042] Figure 10 This is a cross-sectional view of the pin.

[0043] Figure 11 A three-dimensional structural diagram of the guide plug;

[0044] Figure 12 This is a schematic diagram showing the connection relationship between the fixed block, the spring, and the clamping block.

[0045] In the diagram: 11. Power supply copper busbar; 12. Pin hole;

[0046] 2. Server node; 21. Centralized power supply module; 22. CPLD logic chip; 23. Limit switch; 24. Guide pin; 241. Pin body; 2411. First mounting hole; 24111. First hole segment; 24112. Second hole segment; 2412. Second mounting hole; 242. First elastic snap-fit ​​assembly; 2421. Steel ball; 2422. Spring; 2423. Clamping block; 2424. Fixing block; 2425. Guide plug; 24251. Slot; 243. Second elastic snap-fit ​​assembly; 25. Power clip. Detailed Implementation

[0047] To enable those skilled in the art to better understand the technical solutions in this application, the technical solutions in the embodiments of this application will be described in detail below with reference to the accompanying drawings. The described embodiments are merely a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort should fall within the protection scope of this application.

[0048] like Figure 3 As shown, a plug-in system for a centralized power supply server node that supports quantified and controllable hot-swapping includes a power supply copper busbar 11 located at the rear of the cabinet and plug-in components located on the server node 2.

[0049] The 54Vdc power transmitted from the power supply copper busbar 11 is delivered to the centralized power supply module 21 of the server node 2. The centralized power supply module 21, which is set on the server node 2, acts as a power supply unit to convert the 54Vdc power transmitted from the power supply copper busbar 11 into 12Vdc power to supply power to the server node 2.

[0050] The plug-in / plug-out components include a limit switch 23, a guide pin 24, and a power clip 25.

[0051] The two signal lines of the limit switch 23 are connected to ground at one end on the centralized power supply module 21 of server node 2, and the other end is connected to the CPLD logic chip 22 of the server motherboard. The function of the limit switch 23 is to indicate the state of server node 2 when it is inserted or removed from the rack, and to transmit the emitted level signal to the motherboard. The motherboard controls the power-on or power-off of the entire machine based on the signal fed back by the limit switch 23.

[0052] When the power clip 25 is inserted into the server node 2 rack, the power clip 25 is inserted into the power supply copper busbar 11 on the back of the rack.

[0053] The rear side of the cabinet is provided with a pin hole 12 that mates with the guide pin 24. During the insertion and removal of the power clip 25, the guide pin 24 mates with the pin hole 12 to provide guidance.

[0054] like Figure 4 , Figure 5 and Figure 6 As shown, the guide pin 24 includes a pin body 241, and a first elastic snap-fit ​​component 242 is provided on the pin body 241.

[0055] The first elastic snap-fit ​​assembly 242 includes a plurality of steel balls 2421 evenly arranged along the circumference of the pin 241 and a spring 2422 for pressing the steel balls 2421 outward. The pin 241 is provided with a first mounting hole 2411 for accommodating the steel balls 2421. The first mounting hole 2411 includes a first end and a second end. The first end is an open end located on the cylindrical side surface of the pin 241. The diameter of the open end of the first mounting hole 2411 is smaller than the diameter of the steel balls 2421, and when the steel balls 2421 are pressed against the open end of the first mounting hole 2411 under the action of the spring 2422, a portion of the steel balls 2421 protrudes outward from the cylindrical side surface of the pin 241.

[0056] In one specific embodiment, the first elastic snap-fit ​​assembly 242 in this embodiment includes three steel balls 2421, and the three steel balls 2421 are evenly arranged along the circumferential direction of the pin 241.

[0057] When the steel balls 2421 are in the protruding state, the plurality of steel balls 2421 together determine the maximum diameter B of the guide pin 24, and the diameter B is greater than the diameter A of the pin body 241. The diameter of the pin hole 12 is equal to the diameter A of the pin body 241.

[0058] The position of the steel ball 2421 of the first elastic snap-fit ​​assembly 242 is flush with the limit switch 23 when it is not squeezed by the cabinet, and the height is H1.

[0059] Under natural, unforced conditions, due to the pressure of spring 2422, the steel ball 2421 partially protrudes from the outer side of the cylindrical side of pin 241. During the insertion of guide pin 24 into pin hole 12, since the diameter of pin hole 12 is equal to the diameter of pin 241, the steel ball 2421 is squeezed into pin 241 and compresses spring 2422 under the axial shear force of guide pin 24. After the steel ball 2421 passes through pin hole 12, it will spring back out under the restoring force of spring 2422.

[0060] When maintenance personnel insert or remove server node 2, causing guide pin 24 to insert into or withdraw from pin hole 12, additional axial shear force is required for steel ball 2421 to retract into pin body 241 as it passes through pin hole 12. Therefore, additional insertion and extraction force is needed. Thus, during insertion and extraction, a noticeable difference in resistance can be felt between the straight path of guide pin 24 and the path along steel ball 2421.

[0061] Furthermore, during the insertion and removal process, after the steel ball 2421 passes through the pin hole 12, it makes a "click" sound and vibrates slightly as it returns to its original position, further enhancing the maintenance personnel's intuitive understanding of the insertion and removal stroke of server node 2. Combined with the significant difference in insertion and removal resistance, the state and stroke of server node 2 inserted into the rack can be intuitively perceived. Based on the different states and strokes of server node 2 in the rack, the insertion and removal action can be refined into several segmented control actions, making the hot-swapping time of server node 2 quantifiable and controllable.

[0062] The position of the steel ball 2421 on the guide pin 24 in the plug-in / plug-out component can be aligned with or slightly behind the position where the limit switch 23 has just disengaged from the press and returned to its original state. This way, when the limit switch 23 just disengages, maintenance personnel will feel a significant increase in plug-in / plug-out resistance and experience vibration feedback. At this point, the change in the state of the limit switch 23 can be visually perceived, allowing maintenance personnel to wait briefly and allow time for the system to power down. After the system performs the motherboard-controlled power-down operation, continue dragging until the power clip 25 also disengages. Because the node plug-in / plug-out action is quantified into two segments and the current plug-in / plug-out state can be visually perceived, maintenance personnel can control the disengagement state and time of server node 2, facilitating the formation of standardized operating procedures and uniform plug-in / plug-out timing. This provides stable conditions for controlling the power-down time in the server node 2 power-down strategy.

[0063] Furthermore, such as Figure 3 As shown, a second elastic snap-fit ​​component 243 is provided on the pin 241 on the side of the first elastic snap-fit ​​component 242 away from the server node 2, and the structure of the second elastic snap-fit ​​component 243 is the same as that of the first elastic snap-fit ​​component 242. The position of the steel ball 2421 of the second elastic snap-fit ​​component 243 is flush with the end of the power-taking clip 25, and the height is H2.

[0064] By setting a first elastic locking component 242 and a second elastic locking component 243 on the pin 241, the position of the steel ball 2421 of the first elastic locking component 242 is flush with the limit switch 23 when it is not squeezed, with a height of H1. The position of the steel ball 2421 of the second elastic locking component 243 is flush with the end of the power clip 25, with a height of H2. In this way, when the first resistance and vibration are felt during the pull-out process (defined as the first stage), it means that the limit switch 23 is about to change its level, and the system will control the power-down operation according to the level change of the limit switch 23. After passing the first stage, the maintenance personnel can wait a while to allow time for the system to power down. Then continue the pull-out operation. When the second resistance and vibration are felt (defined as the second stage), it means that the server node 2 is about to be disconnected from the power supply of the rack and is in a power-off state. Then continue to pull out, and the server node 2 will be completely disconnected from the rack.

[0065] Furthermore, a plurality of third elastic snap-fit ​​components (not shown in the figure) are provided on the pin 241 between the first elastic snap-fit ​​component 242 and the second elastic snap-fit ​​component 243, and the structure of the third elastic snap-fit ​​component (not shown in the figure) is the same as the structure of the first elastic snap-fit ​​component 242.

[0066] This approach enhances the sense of segmented control over different points within the insertion / removal stroke of server node 2, allowing for more precise control over its position within the rack during the insertion / removal process. It transforms the generalized, uncontrollable insertion / removal stroke into a quantifiable, controllable segmented stroke. The insertion / removal action can be quantified as stroke 1, stroke 2…stroke N, representing the current stage of server node 2's position within the rack. This segmented control mechanism enables the system to perform multi-segment power control operations, providing greater scalability for practical applications.

[0067] Furthermore, for ease of processing and installation, such as Figure 9 and Figure 10 As shown, the pin 241 is provided with a second mounting hole 2412 extending axially, and the second mounting hole is coaxially arranged with the pin 241. The first mounting hole 2411 includes a second end, and the second end communicates with the second mounting hole 2412.

[0068] like Figure 6 and Figure 12As shown, the spring 2422 is located within the second mounting hole 2412 and is coaxially arranged with the second mounting hole 2412. The first elastic snap-fit ​​assembly 242 further includes a clamping block 2423 located at the lower end of the spring 2422 and a fixing block 2424 located at the upper end of the spring 2422. The fixing block 2424 is fixedly connected to the pin 241, and the clamping block 2423 can move up and down within the second mounting hole 2412. The inner ends of the steel balls 2421 of the first elastic snap-fit ​​assembly 242 all abut against the clamping block 2423.

[0069] like Figure 7 and Figure 8 As shown, when the steel ball 2421 moves inward along the first mounting hole 2411 under the action of the extrusion force (with the side closer to the second mounting hole 2412 as the inner side), the pressing block 2423 can move upward along the second mounting hole 2412 under the extrusion action of the steel ball 2421, and at this time the spring 2422 is further compressed until the steel ball 2421 is completely retracted into the first mounting hole 2411.

[0070] Furthermore, the upper end of the spring 2422 is fixedly connected to the fixing block 2424 by welding, and the lower end of the spring 2422 is fixedly connected to the pressing block 2423 by welding.

[0071] In one specific embodiment, the inner cylindrical surface of the second mounting hole 2412 is provided with an internal thread, the fixing block 2424 has a cylindrical structure, and the outer cylindrical surface of the fixing block 2424 is provided with an external thread that mates with the internal thread. The fixing block 2424 is fixedly disposed in the second mounting hole 2412 by means of a threaded connection. For example, the fixing block 2424 is a plug.

[0072] In one specific embodiment, the clamping block 2423 described in this embodiment has a cylindrical structure, and the lower end of the clamping block 2423 is provided with a guide cone surface, on which the steel ball 2421 is pressed.

[0073] Furthermore, to facilitate the installation of steel ball 2421, such as Figure 10 As shown, the first mounting hole 2411 is inclined. For example, the included angle α between the first mounting hole 2411 and the axis of the pin 241 is 60°.

[0074] Furthermore, the first mounting hole 2411 includes a first hole segment 24111 and a second hole segment 24112 in sequence from the outside to the inside (with the end closest to the second mounting hole 2412 as the inner end). The first hole segment 24111 has a spherical structure, and the second hole segment 24112 has a cylindrical structure.

[0075] Furthermore, the first elastic snap-fit ​​assembly 242 also includes a guide plug 2425 located below the first mounting hole 2411. The guide plug 2425 is fixedly connected to the pin 241, and the outer edge of the upper side of the guide plug 2425 is flush with the lower end of the second end of the first mounting hole 2411.

[0076] Thus, when installing the first elastic snap-fit ​​assembly 242, first install the guide plug 2425 into the second mounting hole 2412, making the outer edge of the upper side of the guide plug 2425 flush with the lower end of the second end of the first mounting hole 2411. Then place the steel ball 2421 into the second mounting hole 2412. The steel ball 2421 is blocked by the guide plug 2425 and is just aligned with the second end of the first mounting hole 2411. At this time, rotating or shaking the pin 241 will allow the steel column to enter the first mounting hole 2411. Since the first mounting hole 2411 is inclined, the steel ball 2421 that enters the first mounting hole 2411 will quickly move to the first end of the first mounting hole 2411 under its own weight. Then, insert the clamping block 2423, the spring 2422, and the fixing block 2424 into the second mounting hole 2412 in sequence, and tighten the fixing block 2424.

[0077] After the first elastic snap-fit ​​assembly 242 is installed, the third elastic snap-fit ​​assembly (not shown in the figure) and the second elastic snap-fit ​​assembly 243 are installed sequentially upwards.

[0078] In one specific embodiment, the guide plug 2425 described in this embodiment has a cylindrical structure, and the outer cylindrical surface of the guide plug 2425 is provided with an external thread that mates with the internal thread of the second mounting hole 2412. The guide plug 2425 is fixedly disposed in the second mounting hole 2412 by means of a threaded connection.

[0079] Furthermore, such as Figure 11 As shown, the upper surface of the guide plug 2425 is a spherical or conical surface, and a groove 24251 for cooperating with a tool wrench is provided on the upper surface of the guide plug 2425. In one specific embodiment, the upper surface of the guide plug 2425 is a spherical surface, and the groove 24251 has a straight-line structure, which can cooperate with a flathead screwdriver.

[0080] In this way, when the steel ball 2421 is blocked by the guide plug 2425, the upper side of the guide plug 2425 will guide the steel ball 2421. Since the upper side of the guide plug 2425 is not flat, the steel ball 2421 will enter the first mounting hole 2411 under its own weight without shaking or rotating the pin 241.

[0081] Alternatively, the guide plug 2425 can be omitted. If the guide plug 2425 is omitted, the lower blind end of the second mounting hole 2412 is machined into a flat surface, and the lower edge of the second end of the lowermost first mounting hole 2411 is flush with the flat surface of the blind end of the second mounting hole 2412. Select a spring 2422 of appropriate length so that the upper side of the fixing block 2424 is just flush with the lower edge of the second end of the upper first mounting hole 2411.

[0082] Since the second elastic snap-fit ​​component 243 and the third elastic snap-fit ​​component (not shown in the figure) have the same structure as the first elastic snap-fit ​​component 242, the structure of the second elastic snap-fit ​​component 243 and the third elastic snap-fit ​​component (not shown in the figure) will not be described in detail here.

[0083] Other embodiments obtained by those skilled in the art based on the embodiments provided in this application by combining, splitting, or reorganizing the embodiments of this application do not exceed the protection scope of this application.

[0084] The above detailed embodiments have provided a detailed explanation of the purpose, technical solutions, and beneficial effects of the embodiments of this application. The above are merely specific embodiments of the embodiments of this application and are not intended to limit the protection scope of the embodiments of this application. That is, any modifications, equivalent substitutions, improvements, etc., made on the basis of the embodiments of this application should be included within the protection scope of the embodiments of this application.

Claims

1. A centralized power supply server node supporting quantifiable and controllable hot-swapping system, comprising a power supply copper busbar (11) and a hot-swapping component, wherein the hot-swapping component includes a limit switch (23), a guide pin (24), and a power clip (25), characterized in that: The guide pin (24) includes a pin body (241), on which a first elastic snap-fit ​​component (242) is provided. The first elastic snap-fit ​​assembly (242) includes a plurality of steel balls (2421) arranged along the circumferential direction of the pin (241) and a spring (2422) for pressing the steel balls (2421) outward. The pin (241) is provided with a first mounting hole (2411) for accommodating the steel balls (2421). When the steel balls (2421) are pressed against the open end of the first mounting hole (2411) under the action of the spring (2422), part of the steel balls (2421) protrudes outward from the outer side of the cylindrical side of the pin (241). The position of the steel ball (2421) of the first elastic snap-fit ​​assembly (242) is flush with the limit switch (23) when it is not squeezed by the cabinet; During the process of removing the server node (2), the resistance increases when the steel ball (2421) passes through the pin hole (12). Therefore, the resistance of insertion and removal can be felt to be different when the guide pin (24) is straight and when it passes through the steel ball (2421), so as to perceive the state and travel of the server node (2) inserted into the rack. When the operator feels that the insertion and removal resistance increases, it means that the limit switch (23) has just broken contact. The maintenance personnel should wait a while to allow time for the system to be powered down. The pin (241) is provided with a second elastic snap-fit ​​assembly (243) with the same structure as the first elastic snap-fit ​​assembly (242), and the position of the steel ball (2421) of the second elastic snap-fit ​​assembly (243) is flush with the end of the power-taking clamp (25); During the process of unplugging the server node (2), the first resistance felt indicates that the limit switch (23) has just broken contact, and the second resistance felt indicates that the server node (2) is about to be disconnected from the power supply of the rack. During this process, the time interval between the first resistance felt and the second resistance felt can be controlled to meet the power-down requirements of the system.

2. The plug-in system for a centralized power supply server node supporting quantified and controllable hot-swapping according to claim 1, characterized in that: A third elastic snap-fit ​​component with the same structure as the first elastic snap-fit ​​component (242) is provided on the pin (241) between the first elastic snap-fit ​​component (242) and the second elastic snap-fit ​​component (243).

3. The plug-in system for a centralized power supply server node supporting quantifiable and controllable hot-swapping according to claim 1, characterized in that: The pin (241) is provided with a second mounting hole (2412) arranged coaxially with the pin (241), and the first mounting hole (2411) is connected to the second mounting hole (2412), and the spring (2422) is located in the second mounting hole (2412); The first elastic snap-fit ​​assembly (242) further includes a clamping block (2423) located at the lower end of the spring (2422) and a fixing block (2424) located at the upper end of the spring (2422). The fixing block (2424) is fixedly connected to the pin (241), and the steel ball (2421) abuts against the clamping block (2423). When the steel ball (2421) moves inward along the first mounting hole (2411) under the action of the extrusion force, the pressing block (2423) can move upward along the second mounting hole (2412) under the extrusion action of the steel ball (2421).

4. A hot-swappable system for centralized power supply server nodes supporting quantifiable and controllable hot-swapping according to claim 3, characterized in that: The first mounting hole (2411) is set at an angle.

5. A hot-swappable system for centralized power supply server nodes supporting quantified and controllable hot-swapping according to claim 3, characterized in that: The first elastic snap-fit ​​assembly (242) further includes a guide plug (2425) fixedly disposed in the second mounting hole (2412), and the outer edge of the upper side of the guide plug (2425) is flush with the lower end of the second end of the first mounting hole (2411).

6. A hot-swappable system for centralized power supply server nodes supporting quantified and controllable hot-swapping according to claim 5, characterized in that: The upper surface of the guide plug (2425) is a spherical surface or a conical surface.

7. A hot-swappable system for centralized power supply server nodes supporting quantified and controllable hot-swapping according to claim 5, characterized in that: The guide plug (2425) and the fixing block (2424) are both fixedly connected to the pin (241) by means of threaded connection.

8. A hot-swappable system for centralized power supply server nodes supporting quantified and controllable hot-swapping according to claim 3, characterized in that: The upper end of the spring (2422) is fixedly connected to the fixing block (2424), and the lower end of the spring (2422) is fixedly connected to the pressing block (2423).

9. A hot-swappable system for centralized power supply server nodes supporting quantifiable and controllable hot-swapping according to claim 1, characterized in that: The first mounting hole (2411) includes a first hole segment (24111) and a second hole segment (24112) in sequence from the outside to the inside, and the first hole segment (24111) has a spherical structure.

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